It's small, but here's a real actionable item that you can do to help:

Put a gentle "Use Firefox" (or any other non-Chromium-based browser) message on your website. It doesn't have to be in-your-face, just something small. I've taken my own advice and added it to my own website: https://geeklaunch.io/ (Only appears in Chromium-based browsers.)

We can slowly turn the tide, little by little.

Copy and paste:

<p>
    This site is designed for Firefox,
    a web browser that respects your privacy.
</p>

(I also posted this on the HN discussion.)