CobraBitcoin is minor figure in Bitcoin world and honestly i'm not surprised to see people to join Bcash community. Whether his account is compromised or not, i'm sure Bitcoin.org is still safe since he's not the admin of the website.
This. Cobra has never been a significant contributor to Bitcoin.org. He's just leveraging his reputation as "co-owner" to make himself seem important.
As David Harding points out:
For those who don't know, @CobraBitcoin may co-own
http://Bitcoin.org but he's had little to do with the production, translation, and maintenance of its content. His major contribs are allowing Google to track pageviews, reducing server security, and gratuitous pontification
I'm pretty sure JihanWU support Bcash too so It make no sense If we take his last tweet in consideration where he is against Bitmain/Jihan WU.
I believe Cobra has been using Jihan Wu and the issue of mining centralization as red herrings. The intent is to divide the Bitcoin community against itself. Inevitably, a hard fork change to the proof-of-work algorithm (with significant support) will cause a permanent, sustained network split. Who benefits? Jihan Wu, Bitmain and Bcash.
Last thing Bitcoin needs is another fork.