Originally Posted by dersie
you can use an app like "Wear Button Remapper" and change the long press to set other app or nothing.
Note if you deactivate long press for Google assistant, it deactivate also Google assistant for other way like press the "Mic" icon.
I agree, it's better than to disable it at all. I tried deactivating it, but went back and enabled it back, so yeah, this is a better option.