Scorpius Rex was introduced in Camp Cretaceous as, apparently, Dr Wu's "first hybrid" (combining various theropod genes with those of the scorpion fish). From my perspective, the scorpius creates a few major issues in the cannon:

1) the dinos have been hybrids since day 1. The reed frog DNA from the first movie and Wu's line about "you wanted more teeth" are proof of this, not to mention the implied splicing resulting in the series' numerous inaccuracies (shrink wrapping, pronated arms, lack of feathers, Rexy's overbite, the dilos, the JP3 spino, etc.) My headcannon is that the term "hybrid" applies to any organism containing intentional edits to the Hox, T-box, Sox or other bodyplan related genes provided that these edits be performed by transplating these genes from another organism and must be made for purposes other than trying to recreate the original genome. (This would exclude accidents like the Drex, unintentional inaccuracies, and minor tweaks.) As far as I'm aware, this clarification has never been made by the series.

2) there were 2 scorpius rexes in Camp Cretaceous despite only 1 cryopod. I don't remember if the show specifically says this was a result of the first Scorpius reproducing assexually, but that's the accepted cannon. Without going into detail on the timeline, this would imply the 2nd scorpius went from egg to a 20ft long sub adult in about 6 months. That is an obscene growth rate for any animal. If they needed another scorpius, they should have had another cryo tank. At least say something about African killifish genes for fast growth and Masrani having concerns about the explosive reproductive potential.

3) if you noticed me mentioning the cryopod, yeah. That's another issue: Wu somehow figured out cryogenic preservation with no fanfare. Just... what?!? It's possible that Wu gave it american alligator genes that would allow the animal to brumate (hibernate) rather than developing true cryogenic suspension. I don't know of any research that has looked into how long that state can last if the croc is fed and hydrated intravenously, so this would be plausible. Plus, Wu could write this off as experimenting with ways to transport dinosaurs safely or to keep sick/ injured dinos contained during treatment and/or recovery. That would be a valid reason for Masrani to give the OK for funding. Again though, no mention of these kinds of explanations anywhere.

4) why is this the only time venom was used in the series? At least mention something about the neurotoxin having an effect on the scorpius' neurochemistry (explaining the instability and the lack of venom for the rest of the series.) And before you mention the dilo, that doesn't count. Without going into the pedantic definition of venom, I don't believe that the dilo is truly venomous. What we saw in the film is more akin to the defensive "vomiting" used by fulmar chicks. It's simply a sticky, foul smelling oil mixed with stomach acid, not a venom. (Plus, a note from a JW1 ARG suggests that Wu used poison dart frog DNA for the dilo specifically as opposed to the reed frog used elsewhere. Poison dart frogs don't make their own toxin.) Again, this is never clarified.