>>50275641The truth is that this is a hard question to answer because 1, stall is nebulously defined and depending on the context and person you're talking to stall can mean a teamstyle, a tactic, a gamestate, or a moveset, and 2, because how often you see 'stall' as defined in any of these ways varies between tiers, metas, and level of play.
IN GENERAL, players like running a few defensive mons that can sponge hits, because it makes building and playing teams more forgiving. I'm not going to decide for you whether running like Toxapex + Corviknight and then four offensive mons is 'stall' because that's how these threads devolve into shitposting, but I will say that this kind of build is always pretty popular. IN GENERAL, people only really like running full-defensive teams seasonally. Ladder tournaments are usually a good time to see off-color 'cheese' builds become really popular as people try to eek out wins and get good matchups, and usually something like Shedinja stall enjoys some popularity around then. But, depending on the tier and meta, this tends not to last long since people eventually adapt to these teams and they stop being worthwhile when their bad matchups are too common. Sometimes when a tier is older the tournament players that stick around will figure out a more 'optimal' defensive build that will stay popular if not dominant, but that's not universally true as you can see from something like Gen 5 OU.
>>50277743Sableye enabled those bulky teams pretty hard yeah, teams build around like Hippo + Fat Talon + Mega Sableye were pretty good. I'm no longer an active ORAS player but from what I've seen it's not very stally at all anymore, the dominant structures seem to fluctuate a lot because it's hard to cover everything in 6 slots but things like bulky offenses with Mega Metagross, screens offenses with Serperior, and Sticky Web teams fall in and out of favor based on tournament replays.