Actually that's not anecdotal evidence. Anecdotal evidence looks like this: "It has been my experience that XXX"

The parent has made a different formulation, specifically: "Every person belonging to group Y has had experience XXX"

This difference is significant, because the argument is basically stating that it is not only the experience of the person making the argument, but that the person making the argument is expecting that the readers of the argument are going to be able to confirm the experience for themselves. This is a much stronger argument than mere anecdote.

And for those that are already starting to lean on their keyboards to type "the plural of anecdote is not data", that platitude is a recognition that data is supposed to repose on a generalisable sample of reality, and if you are just going on anecdote, even multiple anecdotes, you are leaving yourself wide open to claims of cherry-picking. But this claim does not cherry pick, it says that a vast majority of "techy" peoply should be able to confirm the claim from their own experience.