Then again, T-SQL is a developer's nightmare. Especially when compared to PostgreSQL's version of SQL scripting. And when you add on all the supported languages it makes MSSQL quite painful from a SQL developer standpoint.
This sounds like more of a religious issue than anything. All of the dialects of SQL have pros and cons, but if you stick as close to the ANSI standard as possible, the differences are negligible. If today's developers actually cared about relational theory, and spent the time to do it right, they wouldn't really care much of the difference between T-SQL or any other dialect. Like when developers bring up a platform preference based on JSON data type support... you're doing it wrong to begin with.