honestly I think banning tera blast would bring the power level down a peg too which I think the meta could really use, plus we can reintroduce a few mons too that would be more healthy without blast probably. Plus it would make it easier to tell what is a problem and what is not.Players have been harsh on it since Volcarona was quickbanned. The issue was that "general" support for the move being banned was lower then since players either didn't either see Tera Blast as broken or wanted Tera as whole axed. Pretty much any sweeper can run Tera Blast, with a few more commonly running it like Dragonite, Kingambit, and Iron Moth to get past a few of their checks, and it isn't as comparable to general coverage moves because you at least have a general idea of what Dragonite / Kingambit / Kyurem will typically run without TB (i.e. Kyurem will run Ice + Dragon Coverage on DD physical Loaded dice sets, making most steels reliable into it, Kingambit will usually only run Low Kick + Dark STAB + Iron Head, etc.). Volcarona does bring tangible benefits to the metagame as well with its great MU into Darkrai, Kyurem, Zamazenta, etc (although I believe these guys to be--fine-- without Volcarona).
TB is more unhealthy in a MU fishing sense since pretty much anything can run a TB variant to snipe something specific, whether it be Excadrill running TB Electric for Skarm, Tyranitar running DD TB Flying for Great Tusk, etc. A lot of other Tera Types on these Pokemon don't give the Pokemon the same MU fishing capbilities or have more notable drawbacks.
Admittingly some healthy users / low tier Pokemon will be caught in the crossfire if TB is banned like CB Dragapult, so a bit of a wider discussion may still be needed, but discussion on this topic has been a thing for a while.
Lately people have warmed up to tera blast going so I think it should probably be tested
It makes it way easier to punish regardless, so saying it wouldn’t come back is a bit of a stretch. Also moltres sits on volc without tera blast rock supposedly so potentially it could come back… I would say test with caution though.I don't think so.
Without tera blast, Volcarona still does what it is determined to do (aka clicking Quiver Dance). Back in gen 8, we even saw something like Safeguard Roost Quiver Dance, even in a metagame that Heatran isn't bad.
But now, even without tera blast, it still has tera to flip up a lot of matchups that are supposed to check it. On top of that, its movepool is diverse enough to tackle with most defensive checks for it in the tier.
So yeah, tera blast bad, but banning it won't give back your moth.