Chrome didn’t drop MathML, they dropped their horrible implementation. Currently Igalia are building a new Chromium MathML implentation: https://mathml.igalia.com/
I'm extremely excited by Igalia's work on MathML and glad that the Google Chrome team had given it their preliminary approval, but in the context of criticising Google for working on the "application web" and ignoring the "document web" (for scientists and others), it doesn't change anything[0]. Google is neither doing the work, nor funding it[1], and their contribution until now has mostly (solely?) been to be open about merging it.
[0] not that you explicitly said that it did...
[1] It's funded by the NISO and the Alfred P. Sloan Foundation.