False binary. I've done a lot of the former almost entirely in 5E. I don't get posts like this, truly. You make up these weird scenarios that are obviously 1.) Fake and 2.) Clearly moralized and then act like you're just stating some honest opinion on reality.So there is no BadWrongFun...
But OSR and Modern do have a huge gap between play styles. And, really they have been their from the start of RPGs. But one of the following play styles is much more common for OSR...and one is Much More Common for Modern 5E D&D.
DM: You enter the under ground chamber. The stone floor tiles are old, some of them already decaying and breaking. A large unlit metal brazier in the middle of the room dominates the chamber. There are six stone pillars spaced throughout the room. There is a wooden table with manacles stained with dry blood next to the north wall. Two wooden benches sit in front of an altar in an alcove in the west wall.
Player: "Ok, I carefully move towards the brazier looking for any movement, and shine my torch on it. Then...(continues)
DM- "You enter the under ground chamber and it looks just like level 11 of Tomb Raider Sever"
Player-"Wow, cool. Um, I roll a Whatever Check of 17 for my character to find things and stuff."
DM- "Your character finds a loose rock in the wall with a scroll and a gold ring behind it!"
Player- "Wow, my character is so cool!"
Of course Style 1 is more common for OSR "old school" games, and Style 2 is more common for 5E D&D.
The main reason the OSR is hamstrung is because of stuff like this. Instead of reaching across the isle to understand another style of play, you just make up stuff to justify an irrational disrespect for it.