IMHO, by placing people with a negative attitude toward AI products under the guise "their priors are outdated" you effectively negate any arguments from those people. That is, because their priors are outdated their counterexamples may be dismissed. That is, indeed, the no true Scotsman!
I don’t see a claim that anyone with a negative attitude toward AI shouldn’t be listened to because it automatically means that they formed their opinion on older models. The claim was simply that there’s a large cohort of people who undervalue the capabilities of language models because they formed their views while evaluating earlier versions.
https://github.com/search?q=ipv4.games%2Fclaim&type=code&p=1
While running ads is definitely a possibility, reaching 9% of all available IPs sounds like a crazy expensive campaign. I don't know what the ratio of people to public IP is but I doubt it's one.