I think it’s a bit of both.
Poker did get harder because there’s way more information and tools now, so the average player is more aggressive and more aware. At the same time, I also feel many players are overthinking spots where simple poker would work better.
At lower stakes especially, solid fundamentals, patience, and mental control still beat fancy lines. The game hasn’t become impossible it just punishes autopilot and emotional play more than before.
So for me it’s less about poker being “harder” and more about adapting without overcomplicating.