The guy who said that also said "Maybe you need a Monero" so pretty funny
If Monero remains a dark market niche that would be fine. Any crypto use on white markets is asking permission by definition, no matter how popular it becomes, defeating the entire point of it.
You're right though people really don't give a fuck about privacy. But they also don't care about sovereignty that Bitcoin offers either. Both of which are taken for granted until it affects them.
All that potentially matters for the general public is Bitcoin price exposure and custodial instruments which means easy price manipulation.