That is definitely not an excuse. (IMHO, YMMV and all that.)
Sure, but there are several issues, and the random reboots is apparently the most dangerous: I can’t check my phone all the time in case I need to re-enter the two (long) SIM passwords for people to be able to call me again. Not to mention it is supposed to constantly remind me things, which it suddenly won’t if it’s stuck in boot. Apparently (from what I’ve read) changing the launcher doesn’t fix that.
Now I wouldn’t voluntarily update it before I get a clear sign that the issue is fixed, but I know the phone will eventually decide to update itself without asking me (and no, disconnecting data is not an option…). 