Certain hardcore games have groups dedicated to teaching new people, like Escape From Tarkov has the Sherpa program and such. Maybe something like that could help?

I understand the notion of learning the old school way, getting beat up until you start beating up, but I care more about seeing new players stick around more than I care about the "oh back in my day...". There is a big issue with retaining new players and I just wanted to bring it up and maybe see if we could start to find a solution.