I'm glad my points we're helpful!
There is some documentation on examples in the Cargo book. The basic procedure is to put it in an examples directory alongside the src directory (and in its own subfolder if it has multiple files), and you can add an entry for it in the Cargo.toml (although it should automatically detect it if you put it in the examples directory, so that is only strictly necessary if you want to change the default settings).
25 isn't too young, and makes sense if you have focused on education and career. I followed a similar path in that I spent a lot of time in education, only starting to properly consider courting someone around the age of 25 or 26 after I finished my PhD. Things were complicated somewhat by Covid, but I got married last year at the age of 30.
As to losing weight, I can't speak much from experience on that, but losing some weight may be a good idea, as much for your own health as anything else. Unless you are really overweight (in which case it is a medical issue that you should address), I think you shouldn't worry too much about it in terms of dating.
I can understand why people wouldn't specifically talk about the fediverse on other sites. It just seems like there is a lot of coverage of X and Meta in the news, but there doesn't seem to have been even a passing mention of fediverse sites in most of what I've seen. I guess the more established social media sites are still a lot more significant than fediverse alternatives though.
Thanks for your detailed post. I appreciate your measured response and approach to defederation, particularly given the personal attacks you suffered. I'm happy with your approach - as long as users who do break the rules can be dealt with, there is no need to defederate.
10 minutes based on my experience.