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The silver lining here is that both of them are wholeheartedly recommending lemmy as the alternative, so it should provide an extra push to those on the fence about migrating
You could unsubscribe from those meme communities and then use "all" view whenever you're in the mood for some memes, and your "subscribed" view won't be drown with memes.
Given how active those meme communities right now, chance that the "all" view in your instance are being dominated by memes anyway, so it's not like you'll have to subscribe to see them.