It makes a difference though. The fact that Chromium is Electron’s backend is why MS picked Chromium to base Edge off. It’s likely they would have chosen something else if that wasn’t the case (or maybe continued with their own web tech).
Brave is run by ex-Mozilla folks and started with Gecko, but switched to Blink very early on. [1] Their reasons didn't include Electron, so Microsoft's may not have either.
[1] Collection of tweets, and a response from someone at Brave: https://www.reddit.com/r/BATProject/comments/9jpqde/brave_br...
(Disclosure: I work for Google, though not on Chrome. Speaking only for myself.)
What evidence do you have for this?
AFAIK the main reason why Microsoft picked Chromium is that Web sites are pretty much guaranteed to work well in Chromium without Microsoft having to do any work.
they stated that their experience with CEF (Chromium Embedded Framework) was instrumental in their decision.
VSCode (built on electron) was probably the main PoC for them.
https://docs.microsoft.com/en-us/microsoft-edge/hosting/webv...