I suspect the majority of D&Ders and especially of DMs are drawn from the more-experienced pool, be it long-time or returning. And, it only takes one experienced DM to introduce a half-dozen new players.
Most people in my gaming group(s) started with 3.5 or later. We've introduced several new players to the game as well. I'm probably the only one that played 1E, many of my players were not even born when 1E was in publication.
I don't have an encyclopedic knowledge of the rules and don't care to take the 1E books off the shelf to look at rules. Heck, I have a hard time remembering what I ate for breakfast this morning much less what the rules were back in the 20th century.
The idea that 1E has any impact on the current game sounds like rambling at the Old Folk Home for Gamers to me ... "I remember back in the day when we rolled 3d6 for ability scores, and we liked it! None of that namby-pamby fancy stuff! And we had to walk to the game up hill. In the snow. Both ways. Fighting off the orcs with our spiral ring notebooks!"
Wait ... what were we talking about again?