After the (temporary) defederation announcement of earlier i checked the Lemmy repo to see if there was already a ticket on the federation limiting option like Mastodon's that people mentioned Lemmy doesn't yet have. Not only i didn't find it, i also saw that there's about 200+ open tickets of variable importance. Also saw that it's maintained mostly by the two main devs, the difference in commits between them and even the next contributors is vast. This is normal and in other circumstances it'd grow organically, but considering the huge influx of users lately, which will likely take months to slow down, they just don't have the same time to invest on this, and many things risk being neglected.
I'm a sysadmin, haven't coded anything big in at least a decade and a half beyond small helper scripts in Bash or Python, and haven't ever touched Rust, so can't help there, but maybe some of you Rust aficionados can give some time to help essentially all of Lemmy.
The same can be said of Kbin of course, although that's PHP, and there is exacerbated by it being just the single dev.
That's an important question to ask. For me (and I want to make very clear that this is exclusively how I handle things for myself) there is a huge difference between things I use (or what I call passive association) and things I work on or contribute to (or what I call active association).
While im ok-ish with using their software if they don't really profit from my usage, I wont be actively helping them. Given the state of the world and western society, I can't really escape using products that are unethical and as a software developer working for a company I can't really decide who gets to use my paid work and since I very much like having a bed and a roof and food and even some comfort in that, I'd rather stick to my job, but I can make a choice on who I support with my free time.