If you can identify the bots that are automating DMCA checks/reports, via either IP, useragent, or behaviours, then yes you can block them. Cloudflare's bot fight mode may help with this.
However you'll find it much harder to identify and block human DMCA researchers. At the end of the day, if you're hosting copyrighted materials, Mr DMCA will come knocking sooner or later. This is why niches such as free movies will use parasites as traffic generators, and host all copyrighted material on domains that they don't care about for SERP presence.