All the keyboard shortcut always work, not just once a tab that's allow-listed has been loaded and JS has been injected into it.
All the settings, including e.g. tab position, fonts, tab loading indicator colors, etc. are configurable via :set
All keys are bindable to all commands via :bind
JavaScript, image loading, etc can be toggled globally, per domain, or for individual pages with keyboard shortcut.
Also, there is an amazing support channel on IRC.
I sympathize with your dislike of the Chrome monopoly. I test my websites in Lynx, Links, AND w3m, not to mention Netscape, IE, Opera, Firefox, PaleMoon, Waterfox, Safari, and many others. However, I also want a usable and performant browsing experience -- something Chrome definitely does not provide, but qb does. I don't think it's anywhere close to being Chrome, it is way better.