That's DNS-level blocking and it won't work for long, being the kind of ad-blocking that's the easiest to circumvent. Companies simply didn't bother to do it.

That's DNS-level blocking and it won't work for long, being the kind of ad-blocking that's the easiest to circumvent. Companies simply didn't bother to do it. But as a test, try blocking ads in any social app, like Facebook, TikTok, Twitter, Reddit, see how well it works.