How about Lemmy having Junk and not-Junk buttons, like email clients have, which can be pressed to indicate spam posts. With a threshold of say five clicks by users on the Junk button it would automatically remove a post (or maybe “frozen” : still visible but greyed out and web links in post and comment made unusable, which might discourage spammers to spam on Lemmy instances). To avoid abuse (Like users creating more than one account to have posts deleted of users they have a personal problem with) this privilege would be given for example to long standing Lemmy users with a certain amount of comments and posts. By doing this the dependency on community mods and admins will be decreased and the empowerment of regular users increased while posted spam has a short life time.
What do you think ?