Not at all. The open policy is that everything is voluntary.
People not turning up is feedback which is absolutely essential for me to have in order to plan for the future and what I have to do. What you get when it's not voluntary is people turning up, hating it, then they hate the game and then they quit - either the guild or the game. And they do that without telling you.
I dont think or guess, I find out by letting everyone do whatever they want.
It's why I run the best social guild in the world with a retention rate which would simply astonish you.
Ofc you dumped "friends" in exchange for purple pixels so I doubt you'd understand.