I actually always thought about it that way.
Like even with the they look different because of the modern animals DNA.
Like for example when some complain about the raptors not being accurate, I just brush it off by thinking that is the way Raptors look in the Jurassic canon.
Link to the T Rex Spinosaurus rematch in Jurassic World 3 petition that Colin Trevorrow noted. We hope everyone joins and help us share it.