It takes away player choice, reduces our effectiveness to play the game in certain content, goes against the history and intent of the class as a whole, and many people have attachment to their pets.
Imagine if your gnome could only ever have pink hair and pigtails. Even if you like your current appearance, all you ever can have is pink hair and pigtails. Forever. And you’re told to like it because pink hair pigtail gnome is objectively the best ever and all gnomes take it.
That’s what it means to many of us.
By removing flavour entirely. There is only 1 pet for MM now and you have to use it.
My point stands. Blizzard calls it a pet and intend it to be your pet as MM. Until they announce otherwise this is a fact.