One does not simply “switch back”. Anyone that stops using Linux was never converted from M$ or A₽₱£€ in the first place, and either was briefly testing it and it didn’t work out for them, trying it under duress and it didn’t work out for them, or trying it to sound less obviously lying or decades out if date when talking it down. Real Linux users only convert others, or tell you it’s actually GNU/Linux, or make sure new users trying out Mint use Debian edition. Real Linux users would use a separate partition or computer for anything that absolutely requires windows that they are unable to part with, even though it can be a pain and windows will periodically try to replace your multi os friendly bootloader with it is own.