Thats not entirely correct.
Ida did come looking for Stain, but none had to know that.
They could easily say he was just looking for Native Hero guy.
Deku meanwhile was genuinly just looking for Ida.
And Todoroki was genuinly just looking for Deku.

So at least for 2/3 of them, there wasnt anything technical about it.
It was genuine self defence.

Hence why i think it paints a very bad picture of just how stiff hero society is.
They could have changed it to only Ida getting into trouble for acting out of line.
And Deku/Todoroki giving up the glory to cover him, if they wanted to make it look reasonable.
As it is, then its likely the only argument for why the liberation army isnt entirely wrong.