The Blaze Blaziken argument is a misinformed comparison to be making. Most people arguing for a Dire Claw ban vs a Sneasler ban do not want the move removed from Sneasler, they would want the move gone all together. The Blaze Blaziken comparison is a bad ask because you would at that point be arguing that Speed Boost is uncompetitive or specifically asking for an exception on this one Pokemon, whereas most DC arguments are saying "this move is not conducive to a competitive environment on any user, whether we have 1, 2, or 200". Even in the case of Sneasler being on the radar as a whole, I see very few advocates of "Sneasler is overwhelming to standard play" so much as "Sneasler with Dire Claw can hax into match-up wins it should not have against optimal play". I don't think there's anything extreme or insane in concept about arguing the position of "I think this move inherently takes skill away from the equation" as a reason to put Dire Claw on a banlist alongside non-mon elements like Double Team, King's Rock, or Swagger, whether or not you think the move in magnitude reaches those levels.I think the Blaziken example really illustrates that criticisms saying that the council's approach to banning is predicated on a slippery slope fallacy are unfounded, because people have illustrated that they will actively ask for said slippery slope to be put into effect. There's no fallacy if we've seen the beginnings of the slippery slope being formed with our own eyes. Opening the floodgates to endless debates of "Well why can't we just nerf XYZmon to allow them into OU/UU/whateverU" is just inviting endless headaches and forum wars. And, as said before, the tiering system becomes meaningless if we allow that precedent to establish itself outside of extreme examples.
I am going to re-emphasize again: Whether or not the ban is the move or the mon, the Dire Claw debate is based around the move being uncompetitive, not making Sneasler "less good" to keep it OU fair. This does not fall into the same category of argumentation as "complex ban aspects to bring Ubers down", as Dire Claw does not make beating Sneasler more "difficult" so much as it makes it less reliable, so refuting the Dire Claw ban-advocate mindset is likely to turn them away from entertaining the discussion if it's brought up because that probably isn't where that position is arguing from to begin with.