I think those make sense as deviations. I’ve heard “my sequel” but you’re absolutely right about postgresql.
The name is kinda irrelevant like hard vs soft g in gif. People know what you mean when you say either.
But in that same vein, the creator of the “graphics interchange format” says the pronunciation is soft g, but basically everyone says hard g… So “official” pronunciation is kinda irrelevant.
I don’t judge anyone who uses whichever term they want, but I’ve just noticed the general trend in my smallish interaction bubble.