The OS has your birthday, but it only reports minor/major when a web services asks. This is better, because when a minor becomes a major, he can keep his device without having to ask parents to unlock it .
It works like this in Android Family Link.
As a parent and a system administrator myself, I think it is brilliant actually. You need age verification somewhere. Having it in the website is bad, because you force people to send their id around. At the DNS level is verg unreliable. Being able to simply set a flag for non-admin accounts and expect legit websites to respect it, makes the DNS solution much more reliable, and removes the need to send your ID and picture around. If it is a tool for parents, it is good.
It becomes bad if the OS is required to DO the age verification, via some DRM-like service that handles your ID and personal data.
If the fraction of a laptop price devoted to ram increased from 18% to 35% it did in fact MORE than double, because the hike is reflected in the final price RAM is now a higher percentage of a higher amount.
i.e. Yesterday the laptop was priced at 1000$, of which the 18%=180$ was for the RAM. Today the price is 1261$ of which 35%=441$ is for the RAM. The laptop without RAM is 820$ before and after.
Make headway at work. Continue to let things deteriorate at home.