Challenges/norms of procuring content into Lemmy?

So I really am happy with Lemmy and a new refugee from that site. I’m also a software developer and am curious about using Lemmy to unify my own information consumption into one app possibly. I’m curious about the landmines or community issues surrounding pumping information from active websites into communities in Lemmy? Like in theory I could write a bot to post things from hacker news or slashdot or a discourse forum or a subreddit or RSS feed, and create a community and pump both the items and comment threads into a federatable instance?

Would that get the hosting entity in hot water? Would people be annoyed by bot traffic or comments that can’t easily go two ways? What if I just released a tool for people to do it privately? It seems that matrix does similar things pumping data between proxies to other networks and I was curious about people’s thoughts.