Yes, more than 95% of all coins and tokens will have no real future. Holding them long term is a losing strategy. This bearmarket might be a real good thing, it's like a flushing toilet. I hope for a marketcap under 100B, if it's gets under 10B that would be awesome.
How do I know whether my chosen tokens will have positive future? Everyone thinks his bags will survive and resurrect, this is why they are still holding in the first place. I really doubt we will see 100B, 200 is my lowest point I think we might go. I am really eager to sell my bags to buy in later but I think it could be already too late.