No.
Real problem is that certain someone doesn't want to have any privacy on bitcoin, and on anything else that people use for that matter.
There are other coins that have much better privacy, so it's possible to do it and we don't need a century to do that.
Do you think that we can simply just copy-paste some privacy code from some other project and just slap it onto the Bitcoin network's source code then poof we got privacy on the protocol level? Because it definitely doesn't work that way.