Yosemite beta 6, just booted with only Firefox and this HN page open takes already 2,8GB. Yosemite is really memory hungry compared to Mavericks in my experience. And future version are going to get hungrier. Those 8GB are going to fall short within the next 2 iterations of OSX, an after paying $2500 that feels ridiculous to me.
Poettering might not be the best leader or the best team player, but I don't think pointing at Linus for this is off-limits. Yes, the internet is full or anonymous idiots and that's not Linus' fault. But as leader of the community, the tone he sets is certainly not a good example, all the contrary, many will feel empowered to be assholes to other community members.
I get that is probably a WIP, but you need to get yourself a proper homepage with some explanation of the product and some screen captures. Otherwise I believe nobody is going to just sign in based on your explanation of what it does.
I'd recommend you to set up a good explanatory homepage then submit it again.