I think it's simply that people for whom the findings are not true are far more likely to comment. There are always exceptions to the rule in empirical studies

I think it's simply that people for whom the findings are not true are far more likely to comment. There are always exceptions to the rule in empirical studies and there's no better way to find them than making a general claim in a public forum. It would be far more surprising if someone claimed the halting problem wasn't true for them (which someone did in fact claim on upwork or somesuch :)