This does not legalize theft, it says sites cannot respond to suspected scrapers differently than they respond to non-suspected scrapers. You can still rate limit, as long as you do it universally to all site users

Copyright law is unchanged. If someone scrapes your blog and then re-uses your posts on their own blog, you still have possible copyright infringement claim

This is a bad analogy as scraped but copyrighted works are still protected by copyright. Whats in question is whether you should have exclusive rights to information you have shared but did not copyright. Seems people also think this noncopyrighted data should also be protected even if its munged and added to an original work by the scraper.

It's not the same thing at all. The film is broadcast without re-transmission rights.

How is that different? Where on my website I gave anyone "re-transmission" or "re-publishing" rights?

It's different for broadcast films and tv https://en.wikipedia.org/wiki/Retransmission_consent