Windows major updates reset things alot and enable thigs that were disabled. How can you have gone 6 years without seeing a popup when they have added things in the last 6 years during major updates that are enabled by default and show dialogue and notifications. Also you are obviously on windoes 10 and not seen the new nonsense in 11.

My parents prefer Linux because it doesn't pressure them with pop ups and enabling new features, it just leaves them alone. If your mom uses a Microsoft account and is happy with windows then Linux would be a nuisance to her as windows popups were for my parents.