Funny comment was made by Jameson that we might take another ten years to do this 
It wouldn't be surprising. Aside from potentially hindering Bitcoin adaption, privacy feature usually leads to higher TX size or longer verification time. In addition, gmaxwell propose Confidental Transaction back on 2015[1], but it was never added into Bitcoin protocol and added into Monero protocol (as part of RingCT) on 2017.
[1] https://bitcointalk.org/index.php?topic=1085273.0
Is it possible some commented that Monerro is better than Bitcoin in the context in question?
I will save the topic of Confidential Transactions, Content privacy for Bitcoin transactions that are posted by gmaxwell for me to read because the contents of the topic are very long and need a quiet atmosphere for me to try to absorb slowly in the learning process of more technical things.
In the topic of confidential transactions, he mentioned Borromean Ringsig. Really, it is very important for me to learn.