A great number of issues can be attributed to the selection of Azure as the platform of choice. That said, a little bird told me that the decision was largely a cost factor. "You get what you pay for" never rang more true.
But none of the issues were azure/cost related except for the slow recovery? I mean, neither AWS nor GCE can make you notice youre not getting cron mail.
Yes, I recall seeing a ticket that referenced Gitlab using Azure because it was heavily subsidized. My company uses Azure for much the same reason, and my experience has been largely positive.
Is Azure cutting deals beyond the usual free 60k over a year or two or whatever it is for cool startups? Azure seems significantly more expensive in general, problems and slowness aside.