Edit: apparently it's true: https://news.ycombinator.com/item?id=15366051
https://news.ycombinator.com/item?id=15365797
Edit: It certainly looks as though the entire team was let go based on the LinkedIn post you linked to in your edit.
We'll see how that turns out.
I've to admit that, on some rather rare occasions, I'm thinking about Jack Slocum and how he gave away/was taken away that thing that once was a truely remarkable, changeing lib for js, at least if you take into account when extjs was released. And I wonder what would have happen to him if he invented something like extjs in our venture capital and crowdfounding times.
I do not know. I don't work in that part and couldn't comment if I did. I'm only commenting to point out that Idera does indeed focus on dev tools, where the article thought it didn't. FWIW, Delphi and C++Builder are still going strong under Idera.
Disclosure: I work there. So I know that they are more than the article says ;)
I personally would suggest waiting and seeing what happens. Usually when there is an acquisition it is a good opportunity to correct mistakes the previous owner made. I'd suggest the author of this article actually contact Idera, let them know his thoughts, rather than posting a blog only. There are real people at the company and they'll read feedback, and now is a good time.