Hi there. I too have 2 Series X consoles. Neither one of them has ever crashed. Of course, that's not the case for some of you so I'm not saying that because it doesn't happen to me, there's no issue. One of the guys on my club with a Series X had a crash recently. One is a day one console and the other is about a year old. So, we need to figure out what's different with some consoles that is causing this. Possibly, it's account related. It might be an issue with the customization on your player. It's definitely an odd issue since there are so few of you, when compared to the overall playerbase, that are experiencing this.
Can you send me a private message with your Xbox gamertag? I'll pass on your account details to see if we can gain any further insight into this.