It is source available, not open source.

Understandable. The name is a play on the Bromite, which is the dead project Cromite forked from.

Cromite

Officially from the Tor Project there is also oniux. From the blog, “a small command-line utility providing Tor network isolation for third-party applications using Linux namespaces”.

Android private spaces dont share the same network namespace, meaning a VPN in the main profile wouldn’t effect anything inside the private space.

It seems alright. Your performance problems might be intentional from YouTube because it detects adblocking idk.

That will be even more susceptible to malware because Linux is easier to hack than iOS or Android. Linux has a weak threat model against malicious software.