I get you enough, I too was obsessed with dinos from 5 to 9. But now that I love visiting museums of natural history of all kinds, it's just pretty obvious that my beloved dinos were misinterpreted. That said, they are cool enough in their own right they shouldn't be outright memory holed because new stuff came out. Just acknowledge them for what they are, that's fine. There's room for several iterations of knowledge. Just like the Regalecus/Giant Oarfish is a weird-ass fish in its own right, but that him being considered the mystical Sea Serpent some centuries past only lends more weight.
As for science advances...Given DNA has a well-established half-life that's way past due from that time, I don't think there's any hope for genetics producing a realistic imagery. Maybe if you trained someone from birth to know absolutely nothing about living wildlife, exposed him to nothing but skeletons and tasked him with extrapolating real animals from that until he god accurate enough, and then set him to do the dinos, that would probably the best bet we'd have, but it would basically just be refining conjecture. A 100% reliable model seems impossible to me.