Check out !worldnews@lemmit.online. The admin of lemmit.online has set up a bot that fetches reddit posts via RSS, making it much easier to make the switch and of course not getting any ads.
You can make requests for subs to fetch at !requests@lemmit.online.
In the end we’re just using lemmy and lemmit’s bot as a simple RSS reader, so nothing illegal or even remotely unethical happening here.
Indeed. If it’s an instance intended to mirror Reddit, it’s fine as a basic backup of Reddit. We definitely don’t want to encourage this behaviour in general purpose spaces, though. That’ll just fill communities with comments that no one comments on, making everywhere look dead.