AFKs that dont take longer than using 1 stack of tools the regular way shouldnt become a problem... while my pet is usining 1 stack (which also works without an addon all by itself) i can answer the phone, open the door, take a shower, eat my lunch, etc...
the real problem used to be those countless toons parking at the pet vendor 24/7 buying further tools and selling trash all by themselves - those are about gone by now
my favourite after all is planting - plant care can't interact all by itself, so its free of risks