It’s an early adopter problem, and it could be much worse (looking at you, Tildes, where I swear I was one of less than 10 users who were not either well compensated professionals (tech or otherwise), or in school at the time to become one, at least before the latest Reddit exodus. At least most of the Lemmy instances, while tech heavy, don’t have the same smugness that a lot of nearly-exclusively highly compensated white collar worker spaces do. (Not that Tildes is unique in that space in the least, Hacker News is utterly insufferable, and the personalfinance and povertyfinance subreddit split arose for the same reasons)
Luckily I think Lemmy has more potential to get more early adopters who don’t work with tech professionally, especially on an instance like Beehaw. I haven’t felt like some kind of lower class interloper (as someone who is in lower level retail management for work) here, unlike many other super techy spaces.
We were late to the SMS game in the US as well, most European countries saw mass SMS adoption back in the late 90s and early 2000s, whereas it didn’t catch on in the same way till about 2005 or 2006 here. I still remember the days of being limited to 400 texts a month, and having certain friends growing up who I couldn’t text because their parents would not get a plan that had any buckets of them.