If you're self hosting for other reasons then that's fine. I self host media for various reasons, but I also give all my email/calendar/docs/photos over to a big tech company because I'm not motivated by that aspect.
They also aren't seeing any of your sensitive data being hosted on the server. At least the way I use them is getting suggestions for what software and configs I should go with, and then I do the actual doing. Which means I'm becoming independently more capable than I was before.