This is interesting to me, my spouse is recently on this "quest", too.
I am confused by how do you define this "manliness" and what yall are looking for. As far as I can tell..

#1. Women are blamed (mom's, female teachers and the fact divorced dads not being around to model behavior.)
#2. Perception that women have "taken something" (control?) away.

Are you meaning integrity and strength?
P.S. disclaimer.. I have a hard time saying all "men" act like this or they are whimps, and all women act like this or they are "itch@s".

Strength comes from an inner understanding of your moral compass, and your aility to define and stand up for that heading.

But maybe this type of thinking is what people think are causing the issue?

Me; W 46
Him; H 46

2 girls
Dated/Married total 28 years.
..I am learning and working on myself.