thundurus isn't exactly 'centralising'. people are using it because it is the most reliable way to stop boosters in their tracks, which is a gigantic issue seeing as just about at least 6 viable pokemon (salamence, scizor, sceptile, staraptor, scolipede, suicune, scrafty, slurpuff etc) suddenly got access to shell smash and a bunch more to geomancy/belly drum etc.
this is probably one of the rare cases where being on every team isn't in any fault of thundurus: there is literally only one other pokemon who can do thundurus's job, and electric-typing aside they are for all intents and purposes the same pokemon. in fact i'd say thundurus's presence (and by extension tornadus) is the only thing that is stopping the game from being fucked over by set up sweepers anyway. the only other options outside of these are quagsire (his bases are fucking terrible and the only addition he got was quiver dance) and clefable (beats salamence/scrafty but loses to just about everything else)
if thundurus/tornadus was banned we'd probably be looking at stuff afterwards like a salamence or scolipede ban simply for their ridiculous offensive/support abilities (salamence has excellent offenses and the movepool to back it up, scolipede beats blaziken now lolol)
this is probably one of the rare cases where being on every team isn't in any fault of thundurus: there is literally only one other pokemon who can do thundurus's job, and electric-typing aside they are for all intents and purposes the same pokemon. in fact i'd say thundurus's presence (and by extension tornadus) is the only thing that is stopping the game from being fucked over by set up sweepers anyway. the only other options outside of these are quagsire (his bases are fucking terrible and the only addition he got was quiver dance) and clefable (beats salamence/scrafty but loses to just about everything else)
if thundurus/tornadus was banned we'd probably be looking at stuff afterwards like a salamence or scolipede ban simply for their ridiculous offensive/support abilities (salamence has excellent offenses and the movepool to back it up, scolipede beats blaziken now lolol)