I would avoid Chromium-based browsers entirely as it still allows Google to strongarm their way into standards that few others want.

My attitude is that even if all the enthusiasts switched, its too small of a marketshare to matter, and its clear nobody wants to build on the Firefox platform - not even Brendan Eich.

Our best hope is for a fork of Chromium to be maintained by the Linux Foundation and for other vendors (and Electron) to use that fork instead. Just moving Electron over would provide significant momentum.