The banality of that twice-linked article is a perfect expression of why food writing nowadays sucks.
May, 2020 - https://www.thekitchn.com/the-best-way-to-get-the-funky-smell-out-of-your-instant-pot-sealing-ring-250302
How about January, 2018 - https://www.bonappetit.com/story/how-to-clean-instant-pot-sealing-ring
January, 2017 anyone - https://www.noshtastic.com/clean-instant-pot-sealing-ring/
And wow! Dry it before putting it away - and on two straws!!!! Who'd have thunk of that?
I don't know about anyone else here, but I often put cooking equipment away soaking wet, just to see what that does.