https://www.youtube.com/watch?v=4wlSCwp_JVAObviously all of this is speculation, but it's something I'm always on the watch for. Just going to a blank hex map made a difference- there was still just as much creativity, but it seemed like it was now through a filter. Once we moved to virtual table tops, this became a bigger issue. I've tried to get this back as much as possible by not using anything that it hard to draw on the fly (spontaneous rewriting of almost all maps is possible) and avoiding anything pregenerated or with too many physical details (any visage will overwrite your imagination, because the visual input is so dominant), but it's still a thing.
Here the youtuber touches briefly on that and goes into why the vastly more detailed and high quality video game-like experience that is One D&D- complete with players likely purchasing avatar upgrades, etc- will produce a very alien space where many of the things we have always taken for granted will be locked up tight by Hasbro.
Anyway it's about a 10 minute video and I thought it was good.