Call that an evidence but can you afford to make a Bitcoin transaction?
It's not worth it, no!
It's becoming unattractive payment method for so many people
That's absolutely true.
I think that that's more of a loss than an evidence that it works (DoS protection and a self-sustainability assurance mechanism).
That's your opinion, and is totally respected. As I said, in my opinion, it's more preferable to have that undoubtedly big loss than risk destroying this beautiful concept in 20 years from now.
To me, it looks like advocating for an extremely high house prices while not being able to afford a house.
Sounds reasonable if the people who build the houses must continue building and selling them, no matter what, or all houses disappear. I don't want a large maisonette for a few thousand dollars if I risk having it gone.