Ok, guys. Let's start with basics. I.e. let's empasize a fact where ABSOLUTELY every currency fails now.

Try to download BTC/ETH/SHITCOIN wallet. How much time will it take to sync with network? Eternity?

Well, this should happen instantly actually, but currently it does not. Why?

Why does downloading a wallet have to be instant? If you do it once you have it forever. If you had to do this every time you wanted to make a transaction you'd have a stronger point. I personally have never downloaded a wallet for any of my Bitcoin. I've created my own.
I would say that Bitcoin is not a piece of shit, but each is entitled to their own opinion.
Right now, Bitcoin is a pretty big deal. A lot of people will make a fortune off it and a lot of others may end up losing a crazy amount of money. The blood bath is exciting!