I think it would be a problem because the scrapers are hammering all types of websites from small forums to reddit with tens of thousands of unique ip addresses at a time. Websites that have neither the money, hardware, or protection had to figure out solutions really quick or suffer what is essentially a constant ddos attack. This is the reality of the web now, it's just an incredibly hostile place.

The "scraping" part becomes unethical when the scraping is so aggressive that it takes down the website (or severely impacts its ability to serve actual clients).

Archive.org scrapes the web all the time, but it doesn't do it so aggressively that it becomes an issue for the websites they're scraping. The same cannot be said for AI scrapers.