Furthermore, altcoins -including BTC-, have failed miserably to serve an actual real life purpose so far. Adoption is minimal -and dwindling- and use case very limited (although expanding slowly). The idea behind PayCoin to line up tens of thousands of merchants IS indeed the right one towards the full adoption and usage in the real world. A real world that want to be protected against scams and don't care if it is centralized, decentralized or dances samba.
It is a major, major undertaking and he have jumped the gun on a couple of key things ... which will cost him, no question. But will the project fully materialize, survive and eventually thrive? No one knows at this stage.
I for one believe he has better chances than any other out there... but it is by no means an easy undertaking.
Interest in AltCoins are expanding, not decreasing. Adoption is not minimal at all, just check out some graphs of posting on Bitcointalk the amount of posts per day are increasing every day and at the rate it's going just Bitcointalk itself will be a massive enterprise within 2-3 years.
I do agree with the rest of what you said, really all a Cryptocurrency needs to do is to survive in the wild, maybe it will work, maybe it won't.
The good thing about data is that you really cannot argue with it: You can google the recent study showing the minimal increment in adoption of BTC (and none of non-BTC has ANY rate of adoption at all, lets make that perfectly clear). I believe it is -BTC- at only 5% more than it was in 2013, for all or 2014... so that's not arguable, is it?
BTCT is a place visited by the initiated only, not by any regular people at all -other than the newly interested, which are normally people without any money at all and average age 16. It in no way, shape or form reflects the levels of adoption of cryptocurrencies out there in the real world.