The Goths are actually very problematic to trace. It has so far been impossible to link Gothic conclusively to either North Germanic or West Germanic. That basicly leaves us with written accounts about their origin, which may or may not be true, and archeology. No sane scholar would try to use a semi mythical account as their main evidence these days, especially when the writer of that account mentioned that there were competing stories at his time, which leaves us with archeology. Making life even more difficult is the fact that material culture does not equal ethnicity.
Now the only archeological culture that conclusively can be linked to the Goths is the Sîntana de Mures/Cernjachov culture since it dates from the time we know the Goths were in contact with the Romans. This is a composit culture, mainly based on older local culture, it does however have the same burial practices as the Wielbark culture has, that is a combination of cremation and inhumation in addition to graves without weapons (which is pretty much unique). So it is possible to conclude that a group most likely moved from the area covered by the Wielbark culture to the area covered by the Sîntana de Mures/Cernjachov culture. The main problem is that the Wielbark culture continue uninterupted well after the creation of the Sîntana de Mures/Cernjachov culture. This argues against a massive migration from the areas covered by the Wielbark culture since a large scale migration should lead to abandonment of a relative large number of settlements.
So some kind of migration from the area covered by the Wielbark culture to the area covered by the Sîntana de Mures/Cernjachov culture is very likely. It is however not possible to know from which area inside the Wielbark culture they came from, or their ethnicity, or the the size of the migration. So even if one were to establish a link between Scandinavian culture, Wielbark culture and Sîntana de Mures/Cernjachov culture it does not automaticly follow that an ethnical group actually moved the whole way.
Trying to get a connection between the Wielbark culture, and the Goths, and Scandinavia is however a lot more difficult. If we are to belive Tacitus the Goths had established themself roughly in the area covered by the Wielbark culture before 100 AD. Now here we run into a very serious problem. The burial practices in the early Wielbark culture are very different from the burial practices in Scandinavia at the time, only some time after 100 AD does Scandinavian burial practices (with some modifications) come into use. This means that the Wielbark culture, and the Goths if Tacitus is rigth, has been established without a direct migration from Scandinavia. There is simply no logical reason why Scandinavian migrants should have abandoned their burial practices for 3-4 generations and then reverted back to them.
As for the scholary debate on this topic the invasion/large scale migration from Scandinavia into the Wielbark culture went out of fashion in the 1960's when Kmiecinskis pointed out the change in burial practices. People like Wolfram, Noble and Halsall for the most part has argued for a no migration from Scandinavia and only a small migration of Goths south from the Wielbark culture theory. Heather argues a no migration from Scandinavia and a relatively large Goth migration south theory. Hansen argues that most of the connection is due to small mercenary bands (if I don't remember wrong), Stoorgard argues for exogamy as an explanation for some cultural exchange. Olsen argues for cultural exchange due to mercenaries and exogamy, and Anders Kaliff has put forward a theory where he argues for a small migration of Scandinavian elites into the Wielbark culture combined with trade, exogamy and a mutual exchange of craftsmen. Hachman went for the slightly more exotic theory of an invasion north into Scandinavia by Goths. Kokowski is as far as I know one of the few who really has argued for the invasion/large scale migration theory the last 20 years or so. Kokowski has however not really been able to explain the changes in burial practices. There is most likely a couple of theories that I have managed to forget here, but it should at least cover the most used theories at the moment. The conclusion would as far as I can see be that 1. it is hard to talk about an academic consensus on the origins of the Goths, and 2. it's even harder to talk about an academic consensus for them coming out from Scandinavia .
Oh, and all of the scholars mentioned above does to my knowledge accept that the name Goth comes from the meaning "to pour"/"outflow of river". That does actually seem to be the only thing that scholars can agree on at the moment.