Please explain, I’m not sure I understand. When a person loads Tor, are they not just using the Tor browser? Why open another browser?

Basically Brave has a 'New Tab with Tor' feature. It's intended to be a bit more private than a private tab, but for people who are super concerned about their privacy they actually recommend Tor Browser (it's in their Help section).

In any case hopefully this gets filed as a bug on Github and things get a bit better.

Because its easier. I can just "Ctrl+Shift+N" on Brave to load Tor within seconds in Brave. Opening Tor takes time and this feature is very useful when trying to quickly access a blocked site.

Another reason I use Tor in Brave is to bypass mega.nz's IP limit on downloads.

I can only speak for myself, but for me it is convenience. If all your browsing is done in Brave, why fire up Tor browser if you don’t need to? Brave has shown they care about privacy and security, so they have earned the benefit of the doubt with me.

The Tor Browser uses the Tor network, but it is certainly not the only application that uses the Tor network. The Tor network existed long before the Tor Browser did.