I fear this will mean the end for a pretty decent watch OS and we'll be stuck with bloat adware
The Samsung Tizen OS is actually pretty decent for what you need it for on a watch.
The applications that Samsung has put out cover most of what is really practical to do with the watch.
It's very easy to customize how you want it to look and it doesn't go around bothering you.
The google wear OS is a horrible monstrosity that basically wants to tell you what it thinks you should want in stupid dumb ways and is very hard to customize and use as a decent daily driver.
I'm on my 4th version of the Samsung watch and I hope to be able to keep going, but if they totally mess up the software, why bother.