Bioengineering is inherently dangerous with a high likelihood of disrupting Earth's ecosystems, killing millions of people, etc. if you do something wrong. A key safety step, as they discuss in one of the movies, is making their organisms unable to reproduce so they can't increase their populations unchecked. Which they failed to do. In real life there are people creating new viruses and there is no amount of security that makes that kind of work completely safe.
IIRC from the book they engineered the original set of dinosaurs so they couldn't produce the amino acid lysine and would (so they expected) require lysine supplements in their diet or they would die.
Then the dino's escape and woops it turns it they can just eat chickens to get their lysine and it isn't an issue for them.
They do mention the lysine contingency in the movie as well, thought it's only a line or two and is likely easily missed by folks who haven't read the explanation given in the book
It criticises science for profit. They literally invite various scientists who know their stuff and they all tell Hammond he's a fucking idiot. It's much clearer in the books, though, where you get to read where they notice all the enclosure mistakes that were made by Hammond's team.