I don't know your gym's situation.
Full disclosure: I'm one of those ridiculously high energy hands on coaches, who only sits down to make a point, along the lines of "well none of you were ready, I thought it was break time? Oh, we're here for gymnastics? Alright, let's go"
There are factors that wear down even the most hyperactive and fire-lighting coach. Like Issues with management. Like being sick and not being able to take a sick day. Like personal issues-we aren't immune. A number of factors, some of which everyone sees as reasonable, some of which you have to live it to say 'yeah i can see that'.
Speculating about what's going on in a person's head on the internet doesn't actually solve what's bothering you, though. Talking to the person does.
Just my 2cents.
I agree on all points! Regarding sickness, it happens and often we have no substitutes. We have to take a vitamin, grab the hand sanitizer and truck on. It's not out of bitterness that we don't get hands on those days, it's more about containment of germs.
Injury, well I have a personal story there. I tore my abs in 2 places, had no substitute. My doctor gave me the whole excused absence option and pushed pain pills and bed like crazy to avoid a hernia. I had things to do at the gym I was excited about and after spotting all summer the kids were ready and itching to go it on their own. Plus I know the chaos of coaches not showing up, it REALLY sucks for everyone having to adapt. So I took advil, promised I wouldn't spot, and showed up.
Well the whole class got their robhbt on a 4 incher on floor with no spot, and one got her layout. I was REALLY happy. After class I got (literally) yelled at by a group of parents who thought their kids would have been doing layouts too had I 'decided to' spot. I explained the situation to them as I had to the class. They all calmed down except for one, who switched classes to get a 'better' coach. Getting yelled at and aggressively put on the spot was NOT fun. I told my husband about it later and he was like 'Yeah I bet you wish you had been in bed drooling from the vicodin now huh??' He was trying to be funny, but it actually did sound better at the time.
So sure there's a dark side of lazy to sitting, but as coaches we don't have legions of qualified back ups when we can't spot. We show up, do the best we can, and hope to not get yelled at ><
**EDIT** I tore my abs demonstrating...sometimes our 'fire' kicks us in the butt! I respect my age, old injuries, and ability usually but used bad judgment. It was a leg lift lol, doc said the angle put too much pressure in one spot and that caused the tears. I play sometimes when I'm not coaching, but always in the pit. Now I have a rule that demonstrating anything other than shapes, leaps, or cartwheels won't be done by me when there are so many awesome and willing gymnasts around to do it! Self preservation will always win when it's that vs spotting a skill, there are so many spot-less skills to work on it that it's really no contest.