If anything, shouldn’t it be encouraged, and even automated? I’m including even the ‘old’ stuff from reddit here. Reddit shouldn’t be the absolute owner of the content submitted by users. When I migrated here, it wasn’t because of me being against reddit users, but being against reddit the company. Copying the content here actually hurts the company in sense that they don’t get to then gatekeep the crowdsourced content.
I think the strength of a community shouldn’t primarily be built upon content another separate community or platform produces.
Now there are givens, like major news and art which “transcends” a singular platform. But repeatedly just lifting content from somewhere else (aside from if you are the creator yourself obviously and wanting to share to different platforms) and shipping it over here isn’t a good look when Lemmy wishes to be a separate aggregator from Reddit.