Not a good look it not being on the main page! I personally use [zen browser](https://github.com/zen-browser/desktop); I like the ideas of Arc, but it always seemed sketchy to me, especially it being Chromium-based and closed-source.
I used Arc for a while because despite my misgivings about using a browser that requires an account etc the workflow was very good for me
I started moving to Zen about a week ago, hearing about this vulnerability yesterday and especially seeing their reaction to it I know I made the right choice in leaving Arc.
Hell despite missing tab groups, Zen browser is the only browser that finally had a "good enough" vertical tabs implementation, which allowed me to finally drop Edge as my main browser.