That is not even beginning to be an appropriate summary. The main issue is that there are remarkably few true counters because even what people think may be a hard counter can be killed by a bad roll.So, the main arguments for banning this is that it can potentially limit team building by forcing people to run something that can counter it, and that it takes no skill to use.
Also that it creates a coin toss scenario.
If it gets banned, then it creates a slippery slope of other things that fall under the same reasoning for being banned.
Talonflame takes no skill to use and limits team building by forcing people to run a check to it such as Rotom-W.
If you ban this, ban Talonflame+Gale Wings, and the metagame will balance out a little better because less people will resort to Rotom-W for walling Talonflame.
If you're not willing to do that, ban nothing and keep it the way it is.
Also your comparison makes no sense outside of being a hilarious fallacy. Talonflame doesn't prevent the player from moving and can be countered as such. It doesn't rely on rng rolls to accomplish what it does. Please stop with the slippery slope arguments people, they don't hold water.