I think we've got a breakdown in logic here: 44,059 users and only 11,984 torrents implies how bad and not active the community is?
Two things ... first, wouldn't the number of torrents largely be a function of the age of the site more than the number of registered accounts? Second, clicking register doesn't automatically make you a part of the community, it just means you registered an account, so it seems to be a bit harsh to try and judge the whole community without taking into account dead accounts. Now that PHD is reaching a more mature state (though still only 1.5 years old) it is now taking steps to start pruning unused accounts, though even when as it does (and number of registered accounts decreases) that doesn't magically make the actual community somehow "better".
So instead of using number of registered accounts to gauge the community, it probably makes more sense to use the number of seeds (i.e. the actual community).
Let's see, I just logged on and checked:
PHD: 85,130 seeds / 12,017 torrents = ~7.1 seeds/torrent
PTP: 1,625,482 seeds / 352,194 torrents = ~4.6 seeds/torrent
HDB: 838,013 seeds / 189,836 torrents = ~4.4 seeds/torrent
No doubt PHD has a long way to go in terms of backfilling older and more obscure content, but as I said above that will probably happen naturally over time. Also, as torrents age and more obscure content does make its way onto PHD that seed/torrent ratio will no doubt fall too. But it's a mistake to call the actual PHD community "bad" and "not active" based on number of registered accounts instead of considering numbers like the above, no? The site seems to be doing well so far, and I think credit should be given where credit is due.
Like someone else said above, you should probably distinguish between "don't allow x265 encodes" and "bad quality" -- do a screenshot comparison and judge the quality for yourself. That's the easiest way to settle that.