Crossposts already exist, there’s a button for it. For example, I just crossposted this post so now it shows up with a little cross-posted to: World News
and my cross-post on World News also shows a little cross-posted to: environment@beehaw.org
Natural language kind of stuff can be helpful if you don’t know the relvent terms for something though I haven’t had too much luck most of the time with ChatGPT on that kind of stuff. Worse is that ChatGPT is likely to lead to even more SEO spam :(
Unless things have changed, Apple’s policy of generally not allowing programs to download executable code would block this. Browsers are locked into using Apple’s allowed web engines because of this, so basically every browser on iOS is safari or re-themed safari