Correct. Divorce for the right reason is permitted, and a Parsha in the Torah, meant to be used, not abused.
The reality is though, that the vast majority of divorces are unnecessary, especially when children are involved.
It has to be important enough for the Mizbeach to cry (for the husband).
It has to be worthwhile that even if she remarries, it can never ever have the depth and satisfaction that a first marriage can have (for the wife, since she’s not “koreth brith” to a second husband)
Kids suffer terribly
It’s serious business.