The fact that POS encourages holding alone dooms any POS coin imo. For any coin to succeed it need adoption, which implies actual spending. At least with POW there's often a better distribution of coins which leads to a decently sized community working for adoption, as opposed to POS when there's like 3 whales staking 70% of the supply spamming posts about how amazing a coin is...
Sure you can argue that POW coins can have a similar situation with insta/pre mine but assuming a fair coin reward system, once the mining community matures for a POW coin the coin distribution will always be fairer than a POS system, which is the first step towards adoption.
just my 2c ofc
PoS doesn't encourage hodling any more than PoW encourages hodling. For example, profits from forging with your NXT stake is less than 0.5%/yearly, anything gives better return that that, NXT assets in the first place. But to buy NXT assets on the asset exchange you need to actually spend your NXT, which goes against the idea of hodling.