They really should be a LOT clearer about it on their homepage, 99.99% of "original" browsers tend to be a wrapper around Chromium.
And as someone who actually lived through the "IE is the standard, deal with it" - age, I refuse to use any Chromium based browser out of principle. We need more actually viable engines in use or Google will just keep dictating what's allowed on the internet by the fact that Chrome has something like 90% market share on desktop browsers.