Not only was it not very successful, it's an old outdated Microsoft playbook from the 90s/early 00s and was targeted at closed source competitors and freeware, not open source software where you can just fork out a separate version.
By all means block Meta instances if you want, but they have 3 billion users, they definitely don't give a shit about a "competitor" with a few hundred thousand users. If simply the presence of a corporation in the Fediverse is enough to destroy it, then it wasn't going to last long anyways. It's embarassing that "embrace, extend, extinguish" caught on around here just because it's a catchy alliteration.