Wear OS needs work but it's not garbage. Given enough RAM it's usable. The Fossil Gen 5 for example is somewhat fine. The issue is more with Qualcomm releasing garbage CPU. Google releasing a watch would help in the same way the Nexus line helped with phones.
What WearOS needs is man power and an easier time getting the fix they need in the Android tree. It's not however a lost cause. With the improved activity monitoring provided by Fitbit it could be nice.