I imagine most people talking about old VAX machines don't care about SEO. And I doubt there were ever any relevant top hits for "Can I see a VAX in a museum?"

I imagine most people talking about old VAX machines don't care about SEO. And I doubt there were ever any relevant top hits for "Can I see a VAX in a museum?" on reddit since day one. But none of that matters, because if you wanted to ask or search for that, you would do it in one of the relevant subreddits. And if I search for "vax computer" on Google I get plenty of good results on the first page. You're making this into more of an issue than it is.