[xwdv]

Once chain analysis becomes trivial, a major selling point of cryptocurrencies will be defeated. What then is the point?

[GuB-42]

The major selling point of bitcoin now is that it is a way to store value that is not controlled by a single entity.

Anonymity never was a design goal (even though it helped) and transactions are now too slow and expensive to make it a viable payment network. You can still buy drugs in Bitcoin, but it is not why people invest so much into it.

[iand]

It doesn't defeat the point of cryptocurrencies which is to create a currency free from a single point of control.

[xwdv]

That is only theoretical.