There aren't bans for using AutoRCM, relax. There may be bans for other things you do in your CFW though....
If you want to know whether you should use AutoRCM, just consider how often you shut down (not sleep mode) and reboot your Switch. I rarely ever do. Also consider how often your Switch runs out of battery in some place where you can't easily charge it before ot turns off. If you don't have AutoRCM in those cases, you have to take a jig/tinfoil/bent paperclip/faerie's garterbelt/whatever everywhere you go, or be unable to boot back into CFW until you get home. If you have AutoRCM on, that's one less thing to worry about. I don't usually leave home with my Switch, but a lot of people do.
I don't use AutoRCM because I don't need it. My Switch stays home and I really only need to reboot it to update the firmware, so it doesn't bother me to do the jig thing when that happens. If you find yourself rebooting a lot, or going out and draining your battery, maybe you should use it. To each his own.