Yes it is true. It have insecure sandbox but in your case it seem like you still use vanadium, if you only use Firefox for known website for the webapp. The insecure sandbox is not that big of a deal anymore. Still from a pure security point, Firefox is not great.
I think overall I have an edge with Brave, since I use it for NanoGPT webapp which I need to be fast or I’ll kys because it was already slow AF on Vanadium so I assume on FF it will be a lot worse
I heard gecko browsers are insecure on mobile
Yes it is true. It have insecure sandbox but in your case it seem like you still use vanadium, if you only use Firefox for known website for the webapp. The insecure sandbox is not that big of a deal anymore. Still from a pure security point, Firefox is not great.
I think overall I have an edge with Brave, since I use it for NanoGPT webapp which I need to be fast or I’ll kys because it was already slow AF on Vanadium so I assume on FF it will be a lot worse