I'll piggyback off of what Acast said; the type as a whole isn't relevant if the individual Pokemon is broken, because it is then Zard-X could be on an ice monotype and still be worthy of suspect.Ok well time to defend Charizard X.As we all know Charizard X is arguably the best dragon dancer in the game right now and it can run various sets from offensive to defensive.Banning Charizard X is just not worth it.By banning it flying will be nerfed a lot.The zapdos ban has affected flying since before that flying was one of the best types to use in monotype and it has the almost unbeatable skamory and zapdos core.Without zapdos flying lacks good defog users.The only pokemon that can use defog effectively are togekiss,mandibuzz and skarmory.Banning Charizard X is not a good move since any pokemon with special attacks can beat skamory and mandibuzz(unless if you are running sp.def sets) and physical attacks can beat togekiss(unless if togekiss runs the physically defensive set) therefore making charizard vulnerable to stealth rocks.Not only that there are several pokemon that can stop charizard x from sweeping.Some of these are:Slowbro,thundurus-i,klefki,liepard,heatran,whimsicott.
All of these "checks" are just status, which zard-x can easily shrug off with heal bell support and OHKO.Slowbro can easily take a dragon claw from +1 Charizard X and use thunder wave to cripple it
Thundurus-i has access to prankster and thunder wave therefore stopping charizard x from sweeping
Klefki has access to prankster, thunder wave AND reflect therefore it can either use thunder wave and stop charizard x or it can set up reflect and let its teamates take charizard x down1
Liepard also has access to prankster and thunder wave and can stop charizard x from sweeping
Whimsicott may seem like an odd choice but since it has access to prankster and stun spore it can stop Charizard X from sweeping.
And why is there this illusion that a para will even stop Charizard-x in several match ups. Electric still can't do anything to a +1 Charizard whose para'd; nothing can take it out except mega-ampharos who still can't outspeed and a banded electavire which I'm pretty sure only I run. Grass also has nothing if they don't run rock tomb Breloom. A lot of types don't even have this paper-thin para strategy, like Poison and Ghost. And again, Zard-X also has support.
I like this lettering thing.hihi I'm Ishy-Hime, a.k.a. Ishtaria! Since we are talking about possible suspects, bans, and such, I thought I would share my ideas about it.
tl;dr Mega Altaria is a problem for some types and there are ways around Mega Alt, suspecting it on Dragon should only be if necessary and Flying doesn't need nor uses Mega Altaria as much as Mega Charizard X, so banning/suspecting it on Flying would be pointless.
A) All of your calcs assume Mega-Altaria is in a 1v1 with the check and hasn't had a chance to boost yet, which it has easy opportunities to do on teammates. And after boosting it both outspeeds and OHKOs "checks" like weavile and bisharp.
B) Even assuming a 1v1 situation, most of your *checks* fall apart if the mega-altaria runs cotton guard alongside dragon dance. I've used the set (coined by E-Series) and it expands what Mega Altaria can set up on and what scarves it can bulk drastically.
C) Even if you don't think mega-Altaria isn't broken on its own (it is) you can't neglect the support Dragon and Flying teams provide it; switch ins to Bisharp, Weavile (flying), infernape, terrakion, and more. Latias's super useful healing wish for late game revivals. Lando-I and Garchomp to sweep away poison/steel/fire checks.
And all of this is assuming the Queen DDD set, when special cotton guard and Roost + 3 attacks have their own host of problems.
But regarding the Queen DDD set, it's dangerous because Mega-Altaria only really needs Frustration/Return, leaving a free slot to eliminate checks on whatever types she chooses; If Mega-Altaria runs refresh it can set up on sableye or rotom-w or Slowbro. If it runs EQ it can stomp through Magnezone and Heatran (fire).
And even without that she's still a monstrous threat.
Idk; ban IMO.