In practice, given real-world power disparities, anti-copyright arguments raised as a defense to scraping and plagiarism (which are not solely copyright issues, as discussed) are likelier to work as a cover for harming creator's moral rights and livelihoods while leaving billionaires free to aggressively enforce their own copyrights, and other intellectual property. Even genuinely-held and principled positions can be co-opted as cover for those who use others' work to enrich themselves on the theory of "copyright for me and not for thee."
Those with genuine anti-copyright positions might very validly reply that they are not looking to destroy creators' livelihoods and communities, but rather wish to build protections that do not depend on individual and exclusive property rights ripe for abuse. And my answer to that is: Great, go build them. Rather than be anti-copyright in the (perhaps unintended) service of billionaires, be pro-alternatives in the service of creators and communities.