How did they get it?
If I opt out, doesn't it confirm that what they have is accurate and make my data even more valuable?
Given the nature of these sites, isn't it sketchy to provide DL to opt out or am I being paranoid?
Can I ask by what law?
Even re: California, are you sure CCPA implies these data brokers have to respect your opt-out for this particular purpose? (For reference, the opt-outs existed before CCPA and I believe GDPR as well... so you're saying they gained teeth afterward?)
Yeah, I don't know why engineers are so pedantically committed to giving these companies more valuable information about you.