Self-hosting a VPN is not entirely straightforward. If you rent a server from Hetzner, for example, and your IP address is linked to Hetzner, it's obvious that it's not a genuine residential IP address.
What you need is a VPN that provides a genuine residential IP address. It's possible to do this, but not easy to set up for everyone.
Europe does not have the same market conditions as the US. The continent is divided into a gazillion amount of small countries, each with their own rules, laws, regulations, languages, customers, pension systems, healthcare systems, and taxes. Even the currency is not the same everywhere. Not to mention the cultural differences.
In the YouTube comments he stated nonetheless that he still bombed big tech interviews, specifically the technical portion, probably because of some ridiculous LeetCode problem he did not memorize beforehand. It just goes to show how these procedures do not effectively determine who is actually a good engineer or programmer. If this guy can't land a job while achieving this, then something is not quite right with the interview process.
If I heard him correctly he stated that it takes A LOT to just render a single frame. It's not playable. It can run DOOM, but you can't actually play it.
What you need is a VPN that provides a genuine residential IP address. It's possible to do this, but not easy to set up for everyone.