I know a lot of people take the position "it's a dinosaur movie where the dinosaurs get free and eat people and that's all I want." And that's a fine opinion to have, and some people are going to like this movie. But the original film, which really didn't need a sequel at all, was indeed a dinosaur movie where the dinosaurs get free and eat people. But it's also so much more. It has amazing characters with a great script, and of course a very interesting cautionary tale about the perils of advancing technology. So, the problems with this new film, and the franchise as a whole, come down to a couple factors for me:
1. The characters and story suck. There's a reason why 25 years later we use memes and gifs of "life find's a way," the could/should debate, "hold on to your butts.," "dinosaurs eat man, woman inherits the earth," "you didn't say the magic word," etc. They are great moments delivered by interesting characters we all remember and who we enjoy going on the adventure with. Same thing with the cup of water vibrating and other moments throughout the first film. They are well executed moments that add to the story/drama/tension perfectly, and we love them and remember them because of it.
The new films have none of that. Hell, until the marketing push for the new film started, I didn't even remember the two lead characters' names. It's all so forgettable.
2. The movies ignore, and sometimes undercut, the entire theme of the first movie. The first movie ends with Hammond agreeing with Grant about the park being a bad idea, implying Malcolm's right about the dinosaurs being a system man can't possibly hope to control. At the beginning of the new movie, people agreeing with Malcolm's viewpoint are basically treated as the bad guys (until the real bad guys are revealed, anyway). The film wants us to agree with Claire over Malcol, thus ignoring the first film (and the many other times humanity should have learned this lesson). Every action by the "good guys" is eye rolling in this context. And at the end of the movie, when it seems like Claire has finally accepted the truth, clone girl intervenes to give an ending that we are supposed to view as 'happy' I guess, despite what this means going forward. Besides, why should we buy Claire as a dinosaur savior anyway? At no point in the last film did she have any emotional connection to the dinosaurs. They were, as she reminded everyone several times, just assets. Given the experiences of the movie it would make a lot more sense for her to have Malcolm's view.
I guess if they wanted to make sequels they should have just gone with the end of the novel, where some animals have made it to the mainland and working there way through the Costa Rican jungle, and in the next movie jumped right into carnage in the open real world without a park, or an island, or a house to constrain them.
