I really, really doubt that this is going to be a concern. First, while technically Mastodon can interact with Lemmy, in practice how often does it happen? It’s not zero, but it’s not a lot, either, and I doubt that Threads will change that much because while it’s a neat technical feature, link aggregators and micro-blogging platforms are pretty incompatible culturally.
And then we have to remember that we’re talking about Threads normies. Do we really think that a bunch of Swifties and Kardasholes and other influencers are going to look at the absolute zoo of Marxist/Anarchist/Linuxist users on Lemmy and be like “this is the type of content I’ve been waiting for, I need to interact more with that community”? This reminds me a lot of neckbeards saying they wouldn’t date Megan Fox because she has weird thumbs.
And then we have the whole thing with the actual fediverse and the tech behind it. There is still going to be no algorithm artificially inflating the popularity of what are thinly veiled ads. Meta has no mechanism for introducing ads into the Fedi. Lemmy is not suddenly going to be massively interested in the vast majority of content on threads and start upvoting to the moon.
And the dev team behind the fedi I would wager is going to prevent any sort of real technical takeover, so that means that at any point defederating is possible, and with basically no loss to the fedi.
So it’s felt like this to me basically since I became an adult. For one, I work in an industry where the holidays mean nothing. And two, now I have adult shit to do, so there isn’t a ton of time to just sit around baking and watching Christmas specials and what not. Also can’t really stand the consumerist side of things and while I do like giving gifts as a thing, I don’t like the idea of “just buy some shit” or “whoever gets the most presents wins.”
Now all that said, when I think back to what used to make the holidays special for me, I realized that was adults deliberately making the holidays special. And the shitty thing about being an adult (unless your SO is like, from the Clause family) is that you kind of have to do that for yourself, and you’re probably going to have to do boring adult shit to make that happen. Like, you might literally be putting something like “Bake cookies/Watch ‘The Grinch’” into your calendar. There is a lot of little things you can do as well - play some music, get some scented candles, stick a bowl of decorative pinecones out, etc.
I think this also helps a lot with other people, or in my case, my kids. I don’t have a ton of friends (I’m very much a person with a small circle, but all people i know I can call if i need help moving if that makes sense) but we do some small get togethers. With my kids, I try to do more of the things that make things feel special for them. Lights on the house I could take or leave (back to being lazy) but I do my best and I put them up, even though it was just a few days ago because that was the first day that wasn’t pouring where I was at home when it was light out. I make it a point to watch some Christmas movies (and let the kids come to a consensus on which) and bake some cookies or whatever. We usually go every year to that neighborhood where every house has cool lights, even if that is an hour drive away. Lots of little things like that.
Anyway, I feel like the holidays are very much a “fake it til you make it” scenario. I tend to think about it like “what do I remember that I liked about holidays” when I was a kid, and then force myself to do those things. What I’ve generally found is that there are definitely times I’ve regretted not doing anything like that, but I never regret when I forced myself to do something like this, and I rarely remember the “forced” part.