The difference is that commercial VPNs are theoretically more beholden to regulatory bodies to shutdown bad traffic/provide subscriber information when so ordered by a court. With a commercial VPN you have a legal recourse against a bad actor. With residential proxies enforcement is much much harder, as traversing beyond the IP hosting the proxy to the TA is often not possible. I also use a VPN to get around content restrictions and have no qualms about their use. Residential proxies are typically bad for everyone except TAs and people who might not have access to traditional VPNs due to their local governments.

Also I'm not selling anything so that EU law wouldn't apply to my services even if I did host them in the EU or provide services to the EU.

I am not in the US! Nor are my services hosted somewhere where this is relevant.

Overseas is generally used for "across an ocean". As this is an NA based publication, "overseas" would likely be Europe, Africa, Asia, Oceania.

Malicious traffic frequently originates from at least one place in every one of those continents. We were breached some time ago by a TA using a residential proxy to send traffic from a Ukr AS block that got around our firewall. Blocking all traffic from regions of the world that you have no intention of servicing is a very valid cybersecurity layer. Getting annoyed because someone used the phrase "overseas" to describe areas to be suspicious of I think is rather short sighted from a security point of view.

Very few cyber attacks come from domestic/near domestic sources, except from botnets and residential proxies. The world will not miss residential proxies.

All it does is imports in Chinese products instead of American products