Also, rate limiting should be implemented at the lemmy server level (if someone wanted to flood/spam a community he could write a simple script that post 1000 post per seconds easily)
Plus there are already real bot software that repost reddit content without human approbation, this app doesn't repost automatically without the user input.
But I totally understand this concern. And I'll see if this app gets abused or anything that might deteriorate our Lemmy experience.