LOL I'm ditching this whole Chrome/Chromium thing. The user agent switchers seem to leak the user agent on Chrome browsers. I've found a Firefox user agent switcher that isn't only up to date unlike with the Chrome extensions but it also doesn't leak the user agent with some of the other possible tests.
You can check if your user agent is being leaked by going here: https://useragent.openadmintools.com/en/
The user agent gets checked through 3 different ways; Http User-Agent, navigator.userAgent:, navigator.appVersion:.
Chrome extensions seem to leak the user agent on the last two checks.