Setting aside all the privacy risks associated by using a Webkit/Blink based Browser, using Tor inside Brave is like someone with a mask screaming "HERE I AM". Even though they have a mask on everybody sees you and hears you and your mask looks different to everybody elses so what's the point of the mask after all?
The mask only works if everyone is wearing the exact same mask. Which is the exact opposite of what Brave is doing.
If you are among "did not download Tor browser" but are among "produces Tor web traffic without downloading Tor browser" you are easier to identify than if you were among "Downloaded Tor browser and produces Tor (web) traffic".
This would make you either more suspicious or your adversary (justifiedly) think you are an idiot.
Sorry what? Tor inside a non Firefox(resistFP)/Tor browser?
I really hope this is just a very foolish mistake since what they are doing by this is defragementing Tor browser(s) and making it easier for adversaries to identify a target.
There probably aren't even as many Brave users total as there are Tor Browser users making someone who uses Tor inside Brave instantly worldwide unique.
Also appearently Brave is a Chromium based browser. Then why is it on a list called "privacytools"? Last time I checked Webkit/Blink based browsers have no possiblity of counteracting fingerprinting or zombie cookies in any way shape or form.
The mask only works if everyone is wearing the exact same mask. Which is the exact opposite of what Brave is doing.