IT sector probably is a lot different in hiring practices than some typical management jobs

That probably depends more on what is before the @. Is your mailadress a gamertag or some random thing you came up with as a teen? “Superbunny69” probably has a lower chance of success than “lastn.firstname”

What does Lemmy think about Lammy?

Feddit.uk is not just used by brits

Well yes, the whole concept of the fediverse is that of social media as a public service. All activitypub data is public.