I had some issues with uplay when I bought Anno 2205, having that double layer of library/launchers is entirely unnecessary. I mean, you can run a uplay game from uplay without loading steam, but the whole point of steam is to have your library available in one place. Particularly when the other launcher is a platform for only their own titles. I'd almost rather go back to managing my games without a library than to have every publisher force their own launcher platforms - sixteen different walled gardens is categorically worse than a blank yard. Maybe then I could also more easily control things like profiles and save directories, too. But I guess we'll never go back to that golden heyday age of 2010, eh? /rant
Anyway, when I tried to get back into about a year ago, the launcher tried updating itself. I let it, only to find out afterward that the new launcher doesn't work under Win7. Had to uninstall the new one and search around for the old launcher to reinstall that. Still works just fine other than the launcher complaining that it is outdated and can't update. That may or may not be relevant for many people these days.
At least uplay actually closes itself when you close it, instead of eschewing 30 years of UI conventions and thinking "X" actually means "Oh, he still wants me around, I'll just hide down here in the notifications area" like so many programs do these days.