I was on Ubuntu for a year. No major issues, although I used the interim releases, which are supposed to be less solid than LTS. Then, a couple of months ago, I decided to switch to Fedora, just out of curiosity. Many people stated how Fedora is rock solid, Fedora is the new Ubuntu, etc. First some rpmfussion updates broke mesa, then the ostree update broke Flatpak, and recently there was a broken kernel 6.3.11 update that affected some AMD users. A few days ago, I updated my kernel to 6.3.12, and I got frequent freezes on boot. Other users are also reporting such issues. So now I boot with an older kernel. Which is not optimal. There is no LTS kernel on Fedora, the old kernel version doesn't receive security updates. Was it always like that, or it's an unusual bad phase.
Anecdotally it seems to be an unusually bad phase, lots of people reporting problems since kernel 6.3 ,then there was the bad ostree update (which I don't think was exclusive to Fedora).
I have enough years of good experience with Fedora to know that's not normal and confidence enough to stick with it.
I was looking for more like a date and Fedora version number, there was a short period for a few months in August-September last year where I didn't have an active Silverblue machine, but apart from that I've been running rpm-ostree upgrade on something on a daily basis for the last two years.
It didn't spew an error message, it failed completely silently. I was completely puzzled and wasted a day trying to figure out why I couldn't overlay a certain package.