It's not about asking me, it's about not asserting things you don't know.
Instead of saying "people did x for y reason" when you have literally no data on x or y, you could say "I don't know why x happened, i only know about z". Or if it's super important you try to put something there, beforehand, you could say "hey does anyone know why x happened? I'm working on a blog post and want to get it right".
Then, someone like me who saw it could happily email you or whatever and say "hey, here's the real story on x".
Or not, in which case you can leave it at "i don't know".
The right answer is not to just assert random things you make up in your head and force people to correct you. I'm aware of the old adage of basically "just put wrong stuff out there and someone will correct you", but i generally think that's super poor form when it's about *other people or things and their motivations". I care less when it's about "why is the sky blue".
In this case, it also happens that there are plenty of on-record interviews and other things where what i said, was said back in the day.
So a little spleunking would have told them the answer anyway.