* Iron bars can now be normal dungeon dressing. Before, they had only been seen in very few instances in Quest levels.
In 3.6.7, they could also appear in front of the 1-tile closets on the north/south faces of random rooms (specifically, the ones that would normally be locked and contain a scroll of teleportation). 5.0.0 adds iron bars to certain Gehennom levels.
* Monkeys in minetown can now try to steal items from you (those may have been in a previous version)
That's also been a thing for a rather long time.
* player monster corpses can generate on traps
3.6.7 had generic elf/dwarf/orc/gnome/human corpses spawning on traps, but 5.0.0 changed it so human corpses almost always spawn with a specific role - I played a few games last night on nethack.alt.org, and one of them found an archaeologist corpse on the first level of the Mines.
NetHack has many variants and forks, and one of them was named NetHack 4 (and was based on version 3.4.3) - naming this release 4.0.0 would've been rather confusing.
On top of that, there had been numerous development builds named "3.7.0", so releasing the final version with that same number would've also been confusing, so they went with 5.0.0 instead.
As for PCs, the vast majority of people use Word, Outlook, and a browser (usually the memory hog Chrome followed by Edge). Again, explain how a PC which is three years old reduces productivity in this day and age.
Easy - all of the added AI/telemetry crap in Windows 11 slows down all of the programs you're trying to run. And it doesn't help when those programs themselves are also being bloated with AI/telemetry.
Recent Democrat presidents have shown a marked reluctance to roll back weird decisions imposed by their predecessors...
You seem to have a short memory. I have a pretty clear memory of Biden's first days in office.
For the past 25 years, there have always been between 2 and 5 concurrently-supported versions of Windows Desktop:
For the first time ever, there is now exactly ONE supported version of Windows Desktop (excluding the various feature updates, and also excluding the Enterprise LTSC versions because, let's face it, nobody's legitimately running those at home). I'm sure Microsoft is thrilled that they don't have to worry about supporting old desktops anymore (aside from the people paying for up to 3 years of extended support).
The only person who always got his work done by Friday was Robinson Crusoe.