Hussar
Legend
LOLDismissive or not, @overgeeked has it pretty much right: it's in the players' interest to reduce the challenge, and it's only natural that players are going to complain about elements of the game that make it more challenging.
The problem is not that they complain, however. It's that the designers listen to them.
Again, very much not my experience. 1e and especially 2e, were the easiest editions in the game. Good grief, after about 4th or 5th level, the PC's could mop the floor with pretty much anything in the game. The only dangerous elements were save or die. Combat certainly wasn't.
Remember how a 1st level party could take on about 20 kobolds at the same time and win 9 out of 10 times? THAT'S what D&D used to be.
Sorry, but we are not going to agree on this. I found 1e and particularly 2e to be incredibly generous and easy mode games. 3e? 3e was very lethal. That got dialed back in 4e but, 5e? I have zero problems whacking PC's in 5e. I'm actually a little shocked how easy it is.