IMO depends on the gametype. I’ll hold bases in Stronngholds or CTF but I’d hardly consider it camping so to speak. Even on Slayer though, I’ll sit on/near power weapon spawns to hopefully help control the flow of the match. Halo is all about power positions and weapons. As far as sitting in some random corner, do what you want but you won’t see me doing it, because it’s not very helpful towards winning. For example no ‘camper’ is going to win a FFA game unless people give them kills mindlessly.
"It's a legitimate strategy"