There is no wrong or right answer here. I could care less about a tuner mute, since I use your method, but I sure can understand those that desire one (especially if you use front of house support).
It drove me nuts that my original beloved Thunderfunk only had a post EQ out (I don't know what sound company the poster above works with, but a pre EQ send is a huge no-no in my world!), but obviously, many don't ever play with front of house support, and some are fanatical enough to carry DI's like the Avalon that are larger and heavier and more expensive than their backline heads.
It drove me nuts that Walter Woods eliminate the direct out on his amps about 10 years ago... many don't care.
I can actually understand the Markbass logic of 'defeaturing' (is that a word) their smallest head, which is probably used mostly by jazz trio guys and small gig guys who never even think about this stuff, and adding some additional features to the more powerful heads that might be used in more 'rock club' settings where some of this stuff becomes more important.
Just musing.... don't even know if I'm making a coherent point