Routa
Smash Lord
I would not say that Pit(s) are great at camping, but rather in "taking their time". We have all seen thous Faptain and Samus players that just move around every now and then doing "nothing". The idea is to not engage in combat and wait for opponents reaction to that. Only more mobile characters with great pokes can do this well. They also tend to cover their "walking around" with with relatively fast endlag along with being relatively safe like Fair in Pit(s)' case. I hope you got what I meant. I'm not that great at explaining stuff.
Speaking of camping with Pit(s). He has way too slow air mobility to abuse it in platform camping. What he has are decent set of aerials which he can use to create an area which opponent has to to move around. He can somewhat cover his presence on platforms with Dairs and can poke thous who try to stay on lower platforms with Usmash and aerials. Their main problem is that they struggle at dealing with opponents on the highest platform on some stages even tho thous stages are considered to be rather good for them.
Speaking of camping with Pit(s). He has way too slow air mobility to abuse it in platform camping. What he has are decent set of aerials which he can use to create an area which opponent has to to move around. He can somewhat cover his presence on platforms with Dairs and can poke thous who try to stay on lower platforms with Usmash and aerials. Their main problem is that they struggle at dealing with opponents on the highest platform on some stages even tho thous stages are considered to be rather good for them.