@matigo Some people want to stop having a silo as their main or only online presence, but they don’t want to give up on their “friends” there who are not ready to move. Or, like me, they really want to use those places only as a megaphone, though they will interact if interaction is called for.
There are third-party tools that link in both directions, and those are being maintained by smart people who work hard at them. Those tools might stop working one day, but for now, I’m ok with depending on them.
You don’t have to do all the api wrestling or scraping yourself.