3. There are plenty of rather large companies that don't get as much attention here as Stripe does (I don't have anything against Stripe btw, just using them as an example in this case).
If HN pulled this article it would be pretty damning on the part of YC. The placement of this article in question does not disprove my previous points.
FWIW, I've enjoyed relatively decent success from my own product launches on HN.
EDIT: re: medium - I mistook you the first time. Apologies. My point still stands re: posts being pulled.