Kind of checks out for me. OneDnD got utterly kneecapped by their Pinkerton shit, after they pulled that jackass stunt then community goodwill was at an all-time low, and introducing a system to replace a popular system is REALLY hard even under ideal circumstances, so it's not a surprise that I'm far from the only DM that hasn't given OneDnD the time of day.
Couple that up with the rampant powercreep in new 5e books and the utter mediocrity of most premade modules' storytelling and content (although tbf the true power and appeal of DnD is for a DM to make a world that's alive and can react to you saying and doing anything, and putting that into a module's story is also extremely difficult), then I and most other core fans that I know have just been homebrewing absolutely all our content for literally years, even going so far as to manually fix higher levels of play with our own errata (as the game is notorious for being completely dysfunctional in terms of balance once you get past level 9)