The carriers were one of the best buys we made for my daughter. She hated the pram, but loved being carried. With a carrier, she was close, and warm, while being involved in what we were doing. We could also get on with the basic tasks of life.
FYI, the wraps, for smaller babies are also great. The baby cuddles you get are amazing. Also the smell of your own baby is like crack cocaine. It’s one of the best bonding tools out there.
Dad’s get frozen out of a lot of early parenting things. Anything that gives men the confidence to get more involved is good.
E.g. my wife took our daughter to “sing and sign”. I decided to go along when I could. Out of 20 parents, I was the only non-mum. The next meetup, there were over 1/2 dozen dad’s, and a grandad. The instructor was surprised and pleased with this. All it took was them knowing they wouldn’t be the only dad there.
If a “manly” bag gives them the confidence to break the norms, then good on them!