I wonder if he cleared cookies and absolutely everythin in Browser before using Windscribe? Also, what Browser was he using?
Windscribe mentioned in their blog that clearing cookies has little to no impact on getting a unique fingerprint
[unfortunately] and I believe he/she was using Chrome.
For those who have concern about browser fingerprint, they should consider using either Tor Browser or Mullvad Browser. Mullvad Browser is fork of Tor Browser, without using Tor connection and you can use it without touching Mullvad service at all.
In addition, each tracker may collect different information or have different approach for fingerprinting.
I just tried Mullvad browser
[with their VPN] and although it showed having strong protection against some trackers, I still experienced what LoyceV did with Tor
[I guess a perfect solution doesn't exist yet].