Ant-Man really gets a bad rap in Marvel, they keep treating him like some madman when it's really all just bad writing (and not realizing full implications of mental illness back in the 60s and 70s) and a few moments of weakness.
Spider-Man did the same thing, no one ever held THAT against him.
Before this, Jan did equally nasty stuff to Hank, in fact she did WORSE things to him. No one remembers this.
Plus, apparently this was due to the artist misinterpreting the script and making Hank look way worse than what the writer intended. It wasn't supposed to look like he did this deliberately.