I don't see a lot of "fans" of specific cloud services. They are each flawed in different ways.
Microsoft gets bashed in the context of open source. In the context of running a cloud, I've only ever seen them praised for actually hiring customer support staff.
It’s a hangover from the baller era. Many devs and systems folks with more than 10 yoe likely had a negative experience with a proprietary licensed Microsoft enterprise product which required RDP to administer.
I think that's primarily because the HN commentariat tends to be working on projects that are cloud-native which tends to skew heavily towards AWS and GCP, whereas Azure's primary customer base is enterprises doing cloudification work.
I mean, sure, there's a bunch of inveterate microsoft haters on here (with varying levels of quality of reasoning for their hate), but I don't think their existence is the main driver of the lack of commenters using Azure.
it is fashionable to dislike Microsoft and has been for most of Microsoft's life.