honestly, for all i am one of those people defending larian here, i doubt that.
The animations are obviously placeholder and the world design is probably getting a lot more details, but what i mean is very specific stylistic descisions that it shares with divinity.
For example the height and structure of buildings. Anyone that played OS1 or 2 will definitly recognize the height of the walls on the ruins, they look familliar, not because they are old assets, but because they are new assets created with a simmilar goal in mind.
Now, this isnt a bad thing, but it certainly makes you draw comparisons. of course the Infinity engien also did this with its prerendered backgrounds. Anyone that hastn played Icewind Dale or Baldurs Gate will certainly not be able to tell a tavern in Targos apart from one in Baldurs Gate.
Theres just some artstyle things that larian likes. Larian likes Statues, big Statues that remind you of Catholic saints and generaly christian imagery from the Renaissance. They tend to be a feature of Larian games and have been for a while. Another thing Larian likes to do is floor pattenrs, things like reliefs or mosaics on the floor, ofthen with a vagueley greco roman or renaissance art theme.
Theres some things you cant help but notice.
another thing Larian likes to do is verticality as map boundries. You dont notice it a lot in Original Sin 1 if you dont pay attention but the game world, despite beeing isometric in view, is very vertical and uses this to seperate areas, rather than using walls, small loadscreens, doors or simmilar things.
The terrain looking like a clustered fissure after an Earthquake is soemthing larian has done in the Original Sin games.
Dont get me wrogn, i think it looks quite frankly amazing. but i see why people associate it with Original Sin, sepcifically compared to Infinity engine games that feature primarily flat terrain due to the nature of the graphics.
Basically what im saying is that Larian is making itself hard for themselves and easy for their detractors. They make a game thats actually very different from ORiginal Sin. Having played both of them multiple times and several infinity engine games i can say that the deadlyness of combat certainly reminds me more of the latter than the former, aswell as the random and erratic nature of it. but the Artstyle is Larian and this makes people associate it with Original Sin (because they havent seen any other larian games, and probably havent played a lot of CRPGs outside of the classical CRPG era up untill bioware went tits up, so to them, CRPGs that look kind of like a Larian game, and dont look like a Bioware or Infinity engine game, probably is an Original Sin clone