/vt/ and that shit subreddit are just retarded, as usual. The hololivepro_EN account was already the official EN account that Tweeted about all of the EN branch. The hololive_EN account was the English side of company-wide account, so reported on everything the JP account would. Basically, they are just gonna maintain one English Twitter, which is smart.
This is literally a bunch of dipshits trying to start shit over nothing.