AaronOfBarbaria
Adventurer
I don't think that means much of anything since the site has separate lists such as "Most Popular DMs Guild Products" and "Most Popular Classic Core Rulebooks" that are extremely selective in terms of what can be on each one - they aren't comparing the AD&D player's handbook to any 5th edition rules stuff, which makes sense, but they are also not comparing the AD&D player's handbook to any campaign setting materials or adventures, not even those for AD&D.I've noticed on the Dungeon Master's Guild site that the top 7 most popular books are the 1st and 2nd editions of the game.
If 5th edition is making people want to play D&D, I don't think it really matters which edition(s) it is they end up playing.Is this becoming a trend? It's like playing 5th edition is sparking an interest to go back and playing those older editions.
I expect there will be people that have never tried the older versions that find 5th edition interesting, see that it is claimed as being "more like the old stuff", and want to check out said old stuff to see if there is even more of what they like about 5th edition present there.
I also expect there will be people that have never tried older versions that kind of like 5th edition but want to get some perspective on exactly what it does that other versions don't, so they are checking out those older versions.
And, of course, I expect there to be other folks like me: I'm playing 5th edition for the rest of my life... but I'll gladly host and DM an AD&D 2nd edition or BECMI campaign if you can find me a table full of interested players (assuming I find time in my busy schedule of also being happy to run a dozen more D&D-esque and non-D&D RPGs).
Lastly, the die-hards that never really switched away from the older versions are still here too - even if they tried out 5th edition a while before going back to their "old reliable" versions rather than shunning the new system entirely.