All the most used dapps are games and distributed exchanges for coins. Distributed exchanges do not justify the existence of these coins (which are meant to power distributed apps not just be tokens for speculation). The games don't need to be dapps they are just novelties.
Find me a dapp that isn't one of those two things with appreciable usage and I'll be impressed.
I'm well informed already about these things. Note that neither of them have significant adoption.
Security tokens are a Bad idea.
Dai is basically only useful for speculating on cryptocurrencies and so I dismiss it like I dismiss exchange dapps. This whole industry can't be built on speculating on the value of nonces.
Why could not you have both ? No one said that you need Securities transactions to be irreversible. STO can bring more liquidity to property assets and simplify dramatically otherwise complex financial operation (title emission, splitting of subsidiaries and so on).
I do hate the point that talks about adoption when we are talking of a technology that has less than 5 years of age (Ethereum for that matter). I hear it a lot and I cannot stop myself to think that this is the same kind of reasoning could have been use again Amazon in 1996 (Bookstore are a small business and Internet has no adoption)
Stable coins are a terrible idea that one day people will realize as such. The economics of a stable coin make no sense. All it takes for it to be totally useless is just enough people to refuse to accept it or the market crashing to the point where trade volume is so low you can never cash out. Just because there is 1 for 1 fiat backing, doesn’t mean you can actually claim your money.
Find me a dapp that isn't one of those two things with appreciable usage and I'll be impressed.