Potential of a Meta ActivityPub client

I am assuming many of you have heard about the potential of Meta creating an ActivityPub enabled client (TheVerge, PCMag etc. have made articles). I was just wondering what people's thoughts are on this, and if it came down to it should instances in the fediverse defederate from it considering it could be a case of Embrace, extend, extinguish.

There's a DefederateMeta magazine at !DefederateMeta@fedia.io if you're interested, which includes an anti-meta pact on cryptpad with the responses viewable on a seperate website if you care to see which instance admins have agreed.

I'm just curious what my fellow sh.it.heads think of this development in the fediverse, any input is appreciated!