Let's be real here... there's no skill required in the CW vs Freeze Mage match up. From either sides.
And skill requirement in Freeze Mage is highly overrated. It's nothing compared to Grim Patron (old and new). I would probably not even rate it higher than Oil Rogue skill wise.
And Freeze Mage does not prey on minions being played. Freeze Mage can kill other non CW based control decks just as fine if they don't play minions (like against Control Priest). In fact that's better for Freeze Mage because minions are getting too efficient/sticky for their board clears these days and the pressure is high. If they get the time to draw their cards and get a good Emperor off safely then they win against any deck that isn't Warrior. It's pure set play at that point and it's really up to the other deck to stop the set play.
Playing against Freeze Mage isn't that tough or skill intensive either... you play it like you play against most control. You don't over extend more than you have to (ie. play around board clears), you deny the draws if possible, you save silences for Doomsayer and you save Loatheb for clutch situations. It probably takes more skill to play against Handlock because you have to juggle the life totals appropriately and play around Shadow Flames/Molten. It's even less skill intensive if you have a Kezan Mystic because then you just yolo until it's time to kill then put down Kezan.
And I say all of this playing both sides of the fence. Last month I almost took Freeze Mage to legend (got stopped at rank 1, also played some other decks). I was one of the proponents of Freeze Mage in the Secret Paladin meta, you can check the receipts. Thing is that Druids still whoop Freeze Mage as does CW. In fact I went up against like 3 Warriors in a row and I instantly deleted that deck from my deck list.
TL;DR: It's neither fun to play Freeze Mage nor is it fun to play against it. It's not fun getting killed over 2 turns from full health and no board plus it's not fun fighting in unwinnable match ups or games you think you are winning but they have the one or two cards that completely check mate you in every single match up.
Yeah it's a different playstyle but it's not a playstyle that is fun.
Also Freeze Mage abuses the Mad Scientist secret interaction as well. If anything that is at the top of list that should be nerfed for the good of the game. And that's not a Freeze Mage complaint, that's a Mad Scientist complaint.