Eh, really depends on how you develop you worlds and you empire in general.
Do you do pure specialist worlds, where the only worker pops are clerks because you do need some housing districts? If yes, then this world benefits more from being Gaia because nothing on that world will get a production boost from aquatic trait on ocean worlds. I mean, if all the pops are aquatic, it can get a big trickier in the end game because housing reduction is chronically underestimated by many players. A world that is mostly research labs and industrial districts might be better as an ocean world if all the pops are aquatic and one has hydrocentric because the reduce housing needs might mean you can get by with less districts and building slots providing housing. Thus having more building slots and districts that are being used for production and that could be enough to offset the bonuses of a Gaia world. Also hydrocentric means that you can expand an ocean world up to three sizes larger which gives you more districts, if you have the influence. Granted this is end game and you're probably going to have either won the game by this point or have already sorted out your worlds.
As an aside, the nice thing about the Baol artifact is that you can get Gaia worlds, even if it's at a slow rate of once a decade and costs influence because you don't have to get the world shaper perk. I'd argue that world shaper is hard to justify by. I think hydrocentric is easier to justify because even though I don't think 50 influence for the decision is a great deal. The ability to expand your ocean worlds by three sizes (three more districts, not sure if planet size gives more capacity for pop growth than districts) and all aquatic pops having 15% reduced housing (again this is underestimated even if we're pasted the days where it was extremely good. It's still helping with pop growth by keeping housing needs from eating into things), 15% increased base resource output (mineral, food, energy) and 25% reduction to ocean terraforming costs. Finally, you're going to have Ocean worlds lying around, which means you get to instantly reap the rewards on those worlds, where with world shaper, you have to start terraforming. I will say both are kind of hard to justify because there are many better perk options, though I'd say hydrocentric gets helped if colossus project gets picked because then you can build an instant ocean world terraforming ship.
Anyways, if your research labs go on worlds producing base resources, which is a valid strategy (I prefer to throw them on my industrial worlds, but not everyone does that). Then you probably are better off with those worlds being Ocean. One, unless your at end game, you're likely not going to have tons of researchers on those worlds since every city district to get a building slot could be coming at the expense of a resource district. So you're not losing out on much research. Also this is where housing reduction can really shine because those buildings don't give you housing and base resource districts only give you 2 housing, while adding two jobs. I'd argue the real rush is alloy rushing to build fleets and with the right setups, you can get a sickening amount of additional alloys from a large Gaia world