Why wait? Jump now! Hehe, okay so only you know your schedule, it’s mostly just a funny phrase (but also: don’t sleep on it forever - you don’t want to be surprised one day when it disappears overnight with no notice).
For me, it’s not just emptiness - it’s the site being devoid of content anymore. Like look at r/firefox after the mods left (I forgot which communities got ousted vs. who left voluntarily, but either way that community packed up and followed them iirc). It is all just the most basic of questions “how do I…?”, often with later edits “I should not have bothered asking, these people will just yell at you”. Just about every post has 1 or 0 upvotes (though more uncommon spikes above 10 do exist, and even rare ones with hundreds), but the titles of the popular posts are all things that are extremely common knowledge - “Mozilla says Apple’s new browser rules are “as painful as possible” for Firefox”, “YouTube is loading slower for users with ad blockers yet again”, “Will Firefox survive in the browser market?”, “Chrome wants to track me? Bye. I use Firefox …”, “Google settles $5 billion privacy lawsuit over tracking people using ‘incognito mode’ (Re: Switch to Firefox ASAP).” These are things that I constantly hear about on Lemmy.
And even more than that, I dread speaking there after Rexit - the trolls omg the trolls… it’s just not fun. Then again, I tended to make posts advertising useful alternatives to Reddit, so you could argue that I brought that upon myself? :-P (edit: although in a community that calls itself by the name r/RedditAlternatives, THAT was the POINT of the discussion that we were TRYING to have there!!)