I still do the wipe and reinstall out of legacy fear, but my coworker has been doing the upgrades since F26 and says they have worked flawlessly...
Big caveat: He doesn't use binary Nvidia drivers (integrated GPU on his laptop). It seems upgrades always seem to snag on Nvidia drivers from my experience.
I have binary NVidia drivers. I have no problem with upgrades for last few releases at least (since akmod invented).
Sometimes, I need to switch from supported release to legacy release of drivers or switch back, because of NVidia politics to remove old drives from binary.
Big caveat: He doesn't use binary Nvidia drivers (integrated GPU on his laptop). It seems upgrades always seem to snag on Nvidia drivers from my experience.