You can actually hide them in Voyager for example. Don't need a special instance for it. You can also set the app to combined instead of individual tally.
To answer your question, upvotes and downvotes are fleeting on lemmy and can be oft meaningless. You could still sort content in posts by metrics, but hide votes, and get insight out of it.
Let's just separate GOOG from Chrome / Chromium and Google Search completely. So that the direction of the most used browser, most used search engine and the biggest advertiser don't circle jerk each other.