Anyone that wants to scrape Lemmy would have an easier time setting up their own server, federating with everyone, and reading straight from their DB. No web scraping required. Though, web scraping defenses would be useful against general web scrapers/crawlers.
There is nothing in the algorithm tied to BTC price. Sure, you’ll likely tend to get less miners as the price decreases, but that doesn’t guarantee that it’s profitable. Plenty of people, organizations, governments, etc do things that aren’t immediately profitable and may never be.