I’ve seen non-tech users in Linux many times. It doesn’t take them 2 months to acclimatise, at most 2 weeks but typically just 2 days. If there’s a blocker, there’s a blocker (like “my shitty bank requires some shitty software installed and they don’t support Linux”) but if there are no blockers it’s really quick. 95% of normal users just need a browser. The next 4% need LibreOffice. It’s only the last 1% that have some need that doesn’t sit in an office package or the browser.
We, the gamers, the geeks, the golems, WE have needs that may not be satisfied with Linux. But we are not normal users. So about 3% of us can be bothered to try and accept the missing software (and learn to love the new - God there are some apps I miss when in Windows), the remaining 97% either try and can’t accept the new habits required or don’t try.
But normal users?! Stick them in Mint Linux and show them where the browser is and they’ll be fine.