Well, maybe it SHOULD be. If someone signs up to be in a band then it should be as important and anything else in their live that they have committed to. IMO.
OK, at first I just thought you were unreasonably grumpy. Maybe taking a walk would help. I don't know. Getting one text a week is not rant worthy. Period. So you were already being .... unreasonable.
But with this last statement you're makes you come across as a jerk.
I love my band mates. We are like family. If they personally needed something I would be there for them.
That said, my band is on like page three of my list of priorities. I have a a wife, two kids, their activities, church, and lots of other things that come before band rehearsal. So do my band mates. We created this band with that in mind. Family/business first.
So, no, I am not as committed to my band as I am a long list of other things. But, guess what, you presumptuous (enter expletive here), I show up dead ready for anything we're doing. I learn my bass and vocal parts cold. I provide the place for us to rehearse (a bonus room I could use for a dozen other things). My wife usually whips up some food for the band. I keep my jam room fridge stocked. I'm the first one to the show (after usually loading the PA into MY truck by myself). I usually have it unloaded and am halfway through setting up the lights when the rest of them start to arrive.
My point? Just because the band isn't even NEAR the top of my priority list, I'm committed ENOUGH. That's all that matters.
I hope you can play your instrument ridiculously well. It seems you're after a career in music. Many if the rest of us have other lives. And that's OK.