Look at the DNS address itself.
If it's something like
172.253.x.x, that's a Google IP range. The proxy server is resolving domains through Google DNS (8.8.8.8). Google has servers all over the world, so your request may be handled by the nearest data center — often in South Africa, Singapore, or elsewhere.
That's not your DNS.
Your home ISP isn't involved at all, which means there's no DNS leak. The website sees a DNS request coming from Google's infrastructure, not from your local network.
Does it matter?
For almost nobody. Social media platforms, marketplaces, dating apps, and most websites don't compare your DNS location with your IP location. A few streaming services might, but for 95% of use cases it's just a number on a checker.
What about "Disguise: 63%" on Whoer?
That's mostly marketing. The service is designed to make the result look alarming so it can promote its VPN. Real anti-fraud systems evaluate many other signals.