Looks like VC money ran out so the development company is now making an AI product like everyone else. Kind of feels bad because it was the only good Chromium Browser and kind of innovative in it's own right. I switched over fully to Zen like a month ago so I don't really care but it's just a classic case of tech bro tomfoolery where a company only works for hype so they can eventually sell it to someone eventually. Nobody bought this company because people make browser mods on github for free.
https://www.reddit.com/r/ArcBrowser/comments/1gc2fxx/arc_officially_not_getting_new_features_only/
It was clear when they ran influencer marketing on youtube, that there was a lot of marketing money, and the hype was artificial. They chose people who didn't know any other browsers existed other than chrome and firefox. Like they were surprised of tiniest feature that's not on chrome but were mature in browsers like vivaldi and others.
looks like you bought into that hype. Vivaldi is way more customizable and feature rich than Arc.
I have been liking Zen too. Hopefully it lasts!