The writing is on the wall if all these projects are coming from China, do you really care of these shit coins thinking that it will help you in making a huge profit, i am skeptical on these hard disk based mining coins and the idea started with Burst and some made money mining the coin as the ROI is decent than the rest of the other shitty coins and if there is a new coins with the same mechanism they will not succeed.

I don't think it will be as popular as you think it will. I have played around with one of the older coins with a similar concept and found out that it puts too much strain on my network connection. Some of us still have really slow internet speeds and datacaps. The slow internet speed makes it almost unusable for people that want to store large files on my network and it would completely drain my internet connection to the point it was almost unusable. So, despite the fact that I had all of this storage available for people to use, I couldn't really share it with the community. I'm sure it's a good solution for people with good internet service though. But, there's a majority of people in the world that still have horrible internet.

If we are talking about our global altcoin season, I do not think ETH 2.0 will bring much impact into it because the upgrade is specified as a transition not an innovation for our global technology in the blockchain. Unlike before, when ETH brought us smart contract system that helped us greatly. On the other hand, even though this ETH 2.0 does not bring that much of impact on our global market, for itself is a huge boost. Because the only way to get a new coin is by using staking, that means the demand will increase.
holding it is preferable, but of course, everything is possible. As long as you can afford it, why not?

PoC stands for Proof of Capacity or Proof of Concept? or another kind of PoC?
how about SiaCoin? and how about BHD?


And what is too high? the difficulty? compared to SIA, BURST and else. It is not worth mentioning

You should try and search and if you are lucky you choose an altcoin with small price and over time maybe will get 100x next year, but is a risk you take and always invest only money that afford to lose.