Ooh copy pasta! I don’t have time to pick apart every point, but a few notes:

Vanadium was previously primarily focused on security hardening but we plan on adding assorted privacy and usability features. In the near future, we plan to add support for always incognito mode, improved state partitioning, backup/restore and many other features.

This statement dates back to at least 2022. How long do we get to wait for “assorted privacy and usability features”?

Chromium-based browsers like Vanadium provide the strongest sandbox implementation, leagues ahead of the alternatives.

Citation needed.

Worst of all, Firefox does not have internal sandboxing on Android.

A statement that also dates back to at least 2022. Factually untrue as of Release 147 in January, 2026.

Firefox isn’t perfect, and Vanadium is absolutely more secure. I’m genuinely happy it’s the WebView implementation on my phone, and I use it in the rare event FF fails me. But for my use case and threat model, Firefox (with Vanadium WebView) blows Vanadium alone out of the water. uBlock makes every website load 10x faster, and I haven’t seen an advertisement in years.

I would recommend Firefox on Android to everyone I know who isn’t actively being targeted by a three letter agency.