This is a Microsoft product. Microsoft have their own database. What value is it to them to help people continue using competitor's products?
Besides, it's not like Postgres doesn't have plenty of GUI tools already:
https://wiki.postgresql.org/wiki/Community_Guide_to_PostgreS...
The value to them is Azure, which hosts open source databases, why not give your customers the decent tooling at the same time?
You'll even find things in the tool that reference non-Microsoft language, eg the button generally labeled "Estimated Execution Plan" in SQL Server Management Studio is labeled "Explain".
The methodology behind the plugin absolutely allows abstracting out the MSSQL specific components, its just an open source fork of VS Code.
I grew up with the Microsoft you describe, but they've been gone for several years now. Not to say they can do no wrong, or that we shouldn't be wary, but to think it ridiculous that they could support multiple databases is not compatible with their actions lately.
http://www.zdnet.com/article/microsoft-nearly-one-in-three-a...
It’s Nadella Microsoft, amigo. Not saying marry them, but at least let them buy you a beer.
http://www.zdnet.com/article/microsoft-says-40-percent-of-al...