- Spoiler - He should have helped catch them
Seriously, the kids in this film weren't real mutants, they were humans, spliced with genes from real mutants.
Logan's 'daughter' is out of control, most of them are. One fit and they go berserk and kill indiscriminately.
Mr. gold-tooth was right, they were products, weapons and needed to be under management and control, to avoid any danger to society.
Off-course, it's unethical to even conceive the idea of just force-altering someone's DNA and kill them if you get something better.....but as for the movie, Logan should have helped hunting them down.
They are like the gene-modified corn from Monsanto, they are artificial and cannot and should not spread.