They've put improving their browser on hold to focus on their new passion: fighting decentralized software https://foundation.mozilla.org/en/blog/fellow-research-decen...
What's the problem again?
And I suppose Meta doesn't produce a social network?
Also the fundamental analysis of the article is that we need to have centralized control over decentralized networks (which they refer to as networks of trust and abuse audits), making the decentralized part inept. If you can no longer run a decentralized service without getting permission from a centralized authority, it's not really a decentralized service