Windows 10 will install upgrades automatically - you have no selection ... unless you set 'Metered Connection". In which case it will defer updating until you "tell it to do so". But, even then it's all, you can not pick and choose.
Spot on.
The key advantage is that M$ has this annoying habit of putting out updates that have unintended side effects such as freezing machines from time to time etc.
By setting 'metered connection' you get the advantage of not being the automated guinea pig (aka unpaid beta tester) for M$.
Normally within a week if there are issues with M$ updates then copious articles will be appearing everywhere in the tech press. Similarly, if a 'data' gathering update is added then you do not fall victim to it. Several of those updates over the last 18 months were silently reversed by M$ after high-level tech throwback. Others had 'optional' updates issued that removed that component from a broader single file update. <Who says politicians cannot teach companies a trick or two?>