>>39576095When they were first introduced they were screwups that actually sabotaged team rocket plans by accident.
When they started travelling far away to stalk and harass a 10 year old he realized they had some use in using their accidental sabotage skills to take down rival gangs.
Basically he's fine with them as long as they don't stick around in the Kanto region because when they're far away their stupidity is actually of use and he doesn't really have to deal with them himself.