This is a really dumb take. If you don't like it, don't use it. They got an idea and implement it? Good for them
And what does that even have to do with switching to Linux?
There is an issue open on Lemmy's github about merging communities of the same name together in the ui by an "all" button, but sadly it's been inactive for a year: #1113
What? No.
Going with the garage analogy, it's like buying a dirty car vs getting a new one and it getting dirty over time