Disclaimer: I have not played the game
After reading what most of the folks are saying here as well as many user reviews on steam, it seems this new Doom is going in a very different direction than the core Doom tried-and-trusted gameplay: people play Doom to kill everything that moves without a care in the world. It's a pure adrenaline rush and letting off steam. They don't want to be told how to play it, don't require a complex backstory, intricate puzzles, platforming, elaborate dialogue/cutscenes, etc
I believe one user summed it up:
QuoteQuote Doom Eternal tells you how you should play the game and punishes you when you don't, unlike its predecessor which gave you the tools and told you "go on, have fun!". Combat feels like a chore and map design is confusing or lazy at times.
As Minos said, I'll wait until a steam sale with considerable price reduction before buying it.