They are not showing 'real' dinos in JP franchise, they said that in JP 1 itself, even in the book, it's mentioned that the Dino DNA chain was fragmented and incomplete, and they used DNA's from other animals to complete the sequence, that they could fit in by using various techniques, like - 3D modeling, trial and error, Frog DNA.
In JP 3 they did attempt to show some feathers on dinos (mainly raptors), in my opinion, JP dinos are not real dinos but they come close to it as compared to how dinos are shown in other movies so far.
The films only came close to it in the 90s because they actually wanted to use then-modern science to make their creatures look and behave differently than anything that had been shown before onscreen. Now pretty much every piece of dinosaur media since then has tried to copy
Jurassic Park and failed, (including
Jurassic World) as science moves on. It's not even just a feathers thing; as aforementioned, the animals' anatomy is overall pretty bad; a lot of
Jurassic World's creatures (the herbivores especially) look like the dull sluggish animals that the original
Jurassic Park was trying to work against in the first place through having more active designs. But then again, it's a very carnivore-centric series, so I understand why the raptors and tyrannosaur got glorified. (Even though large herbivores are way more dangerous and likely to actually attack and kill someone than a carnivore.)
My thing is that it's been 20 years since the original park. The birds-are-dinosaurs thing is accepted fact in both our universe and the JP-verse, so why InGen/Masrani in the
Jurassic World series decides to throw money away into creating more unhealthy animals (due to the various problems that come up with filing in the fossil genomes with more distantly related animals as opposed to using birds and crocs) that cost more to keep alive is a silly in-universe thing that I'm sure will never get addressed but still manages to irk me from a business standpoint.
If we're going to have adapted dinos can someone give the T-Rex some respectable arms?
I thought that's what the Indominus was supposed to be, opposable thumbs and all. If you want to rag on tiny-armed dinosaurs though, get a load of the actual
Carnotaurus (which is in
Fallen Kingdom and is actually one of the few dinosaurs that largely looks on-point except for the arms and exaggerated scutes) with its unbendable arm, non-functional finger-having self

:
At least
T. rex could actually lift, bro.
There's another trailer coming out? Don't they already have two or three out at this point?