The reduced spending on dev tools makes me sad. Their efforts in the past, for example their unparalleled support for CSS grid, have set the standard for web developer tools. I hope they find a way to continue to innovate in this space.
Yeah, I very much agree. For a diverse Web development needs to be good on as many browsers as possible.
Maybe this could be one of the separate parts some of the devs could split out as a donation/patreon project or something. You pay for them giving you better dev environment in Firefox.