Youtube blocking views from proxies? Is that technically possible?

I keep reading that you can't increase YT videos views using proxies, but I was wondering, is that really technically possible?

I'm not a programmer nor a coding guru, but I know for a fact that if a proxy is used correctly (i.e. imitating a real life user behaviour) there should be no way for a site to understand that it is a proxy. The exception being if you use public proxies abused by millions of people.

So, why using private proxies (or at least public not abused proxies) with a well…

Youtube blocking views from proxies? Is that technically possible?