I’ll take that a step further: the big default subs on Reddit were essentially worthless. Did anyone really use Reddit primarily for stuff like r/technology or r/news? You would have gotten almost the exact same, if not better, coverage of those two with a couple of tech Youtubers and AP News. Repeat for r/politics, r/worldnews, r/games… etc. Anything that was on there was mirrored elsewhere. If they had gotten Thanos snapped out of existence, it would have ultimately been a mild inconvenience at worst.
The real Library of Alexandria are the small subs. Those are the niches that need to be filled to make Lemmy a viable replacement, and we can’t get there without further growth.