There is no point in them having "attack" option, they drop literally nothing.

Asides from bones, but let's be honest here would you wanna kill something that only drops regular bones and nothing else? No you wouldn't since it's an extremely slow way to train prayer.

 

Or at the very least make pickpocket the main option instead of attack.

I think Attack goes to the left-click action by default once your combat is higher than said monster. They could probably change that for some NPC's with some coding though, so it's not a bad idea to make pickpocketing easier.

OSRS has that feature, lol.

There is no point in them having "attack" option, they drop literally nothing.

Asides from bones, but let's be honest here would you wanna kill something that only drops regular bones and nothing else? No you wouldn't since it's an extremely slow way to train prayer.

 

Or at the very least make pickpocket the main option instead of attack.

Not that I don't agree with you about the left-click option, but they also drop court summons and clue scrolls ;) (Court summons only after you have done your first trial)

That would be a good idea, along with other monsters that require higher thieving lvls.