I think QA takes too much heat for bugs that players find. Most of the time, the bottleneck for fixing bugs is not finding them but rather fixing them. I really hope that their next DLC is content-based (Events, races, etc.) rather than systems based so their programmers can be tasked with going through this enormous backlog of bugs instead.
In both cases, I hold project manager responsible.
It is his prerogative to make sure there are no bottlenecks between QA and coders.
In my experience, putting a lead developer (such as Wiz) into project manager role is terrible mistake, as numerous examples have proven, developers make terrible project managers/delivery managers.
Stellaris IS a huge game with lots of species, ethics, whatever included. It must be hell to test, no doubt. Which makes QA division even more responsible to hold the torch and not get burnt.
I have no doubt of course, that the current broken release is solely to blame on management rushing the DLC out for Christmas sales as well.
Well-known Paradox logic of "let's milk the sales, and patch it with 11-12 patches later".
And the pipeline between QA and coders responsible to fix issues is more than clogged.
Not to mention, many issues are just left unanswered until later.
E.g. "why bother with fixing sector AI, when we plan to redo planet management sometime soon..ish?"
E.g. "why bother with fixing border protrusion, when we plan to move to outpost model sometime soon..ish?"
And so on and on.
I agree, from business point of view it's perfect, you save craptons of money by not coding behind, but coding ahead, but hey, this train has to arrive somewhere.
Stellaris 2.2.3 is a perfect example of this gone too far, the game is beyond unstable atm, literally impossible to play, AI has no idea what it is doing at all, game crashes every time when exiting to menu, and so on and on. How much longer can this go on?
At some point you have to take account, settle down, stop jamming new features and stabilize.
Or at the very least, branch your coding properly, so the main product is being stabilized while small science team is working on experimental features.
But in current development model, Stellaris is just a trainwreck about to happen, if not happening already.
This is not Agile, this is not Scrum, this is "Omfg Christmas is coming" type of development.