I honestly don't know why people hate those fossils so much
"Oh but they're abomination"
Yeah. They're MEANT to be abomination. That's the point. Maybe in the future they'd have a full fossil pokemon it'd be great, but with what I have so far I am pretty happy.
They're trying to do something unique and different and it might not sit well with everyone but I like stuff that are experimental like this.
Good concept, poorly executed and bad designs.
"But they're supposed to be badly designed!"
Bad designs are still bad designs, doesn't matter if it was done on purpose (if anything that makes it worse as it makes it feels like the artists went halfway through with the idea before throwing their hands in the air saying "good enough").
Also, if they were going to do this, I'd rather they used more interesting dinosaurs/prehistoric animals, notably ones which already had a Pokemon counterpart. Also, now who knows if we'll ever get an actual raptor Pokemon (or dunkleosteus, though I think more people care about the raptor) since that's what the Fossilized Bird is, GF could consider it done and scratched it off.
Also I find the Pokedex entries insisting these things existed in prehistoric times insulting. I'm fine with the ones explaining how the odd combination of parts result "work" together (or rather, don't), but even if we go with the theory the Pokedex is written by the kid we're controlling, are we supposed to believe they took Cara Liss had her word? I want to give the character I'm controlling a bit more credit than outright believing a woman with two different colored shoes telling them that the abomination they created by bashing two completely different fossils together actually walked the Pokemon world millions of years ago.
P/s: Also people were fine with Kyurem fusing with Reshiram or Zekrom idk
Thought and design were put into those. They didn't just chop off Reshiram/Zekrom's head and put Kyurem's head on its body, Fused Kyurem looks like a Kyurem that's halfway transforming into a Reshiram/Zekrom, with some asymmetrical design to show the incomplete fusion.
Same with Necrozma. Granted its fusion had some wonky design aspects though that's because, instead of fusing into one being, Necrozma is using its own body parts as armor to contain Solagleo/Lunala. They had to figures out how each part of Necrozma, notably the hands and body/head, would "fit" onto Solgaleo/Lunala even if they're just hanging off it. And you know what, people still even gave the Necrozma fusions flack for that.
BTW, if you like the new fossils, anything I say shouldn't change that. Obviously taste is subjective, these are mine (and I assume many other's) hangup with these fossil designs. All I'm saying is that, now that we have these, let's not do these again. GF had their fun (I'd argue they could have put more thought into their fun...), but this is really those "one time thing" sort of deals. Heck, I don't even know how they're going to justify the creation of these fossil Pokemon in the future unless all fossil restoring Pokemon scientists are unethical from now on or you have to be sneaky/tricky in some way. Maybe like with Dynamax these fossils should stay in Galar, next games after Sword & Shield to have them would be their remakes in 2030. I like that plan.