It's a double-edged sword IMHO. On one hand, it means that people on Lemmy don't need to give reddit any clicks / traffic in order to read the same stuff, but on the other hand, the sheer amount of reddit reposted content can easy drown out actually original content on Lemmy that might have been equally or more interesting. And if it looks like Lemmy content is 99% cloned stuff from reddit anyway, there's no real incentive to prefer Lemmy content over reddit. Not many people actually take the time and dig deep for OC inbetween reposts.

What the Fediverse needs, is lots of original content not found anywhere else, but as long as the total userbase isn't big enough to offer that on a consistent schedule, then copypasted content is still better than NO content at all ...

Personally I dislike bots tho. If an actual human decides to repost interesting things from reddit and actively participates in discussions, that's something I can get behind. A soulless bot just copypasting random stuff.... no thanks.