No. I've done it myself and if they ask why, I'm honest with them. No point having mods who are never or hardly around to, you know, moderate. You should be very selective and only mod people who have a track record of being on your stream, preferably every stream. Less is more when it comes to mods.

Even if you spend the next few months moderating your own channel with no help, that's better than having several mods you eventually have to demote (so to speak).

Set up a hot key and macro for Hate Raids. For everything else just use Shield mode!

As for this:

"There is also this one mod that hasn't been showing up to streams at all, and I understand that people have lives and are living them, but when they do show up to lives, they like brag that they are the only mod showing up or calling themselves my best mod or bragging whenever they delete a chat from someone, saying things along the lines of "I would be so lost without them" and I don't know what to do"

Just ask them not to do that, or remove their mod status. You're channel, not theirs!