Hate everywhere, for a change...
I don't get why people think PH owes them in any way. Yes, it's all about curation. But yes, anyone could post there, provided they have a good product and they socialize a bit.
And this is what this is about. To me, PH is a social network for founders. They show off their project, discuss it and get feedback.
To all the people blaming how it's not egalitarian: would you create a twitter account, avoid engaging with anyone, then complain nobody is following you?
The same applies than in any social network: if you want people to get interested in what you're doing, start with being interested in what they're doing, and chat, a lot.