[Dragncar]

Paper has its place, so does a K&N.
I do know a K&N is not going to hurt your engine in any way. I ran one on my old 455 since the early 90s and the engine was beat on until 2019. Well over 1000 passes and it ran its fastest right before I shut it down so the bores-rings were not hurt.
Way back I had one of those garbage triangle air cleaners because it way laying around from my brothers old high school ride and I had hood clearance issues. One day I bought a K&N stack and pulled the hood off. The car gained 7 tenths.
Industrial stuff, no one is going to take the time to clean a gauze filter. Company buy the filters and pre filters and you throw them on.
My wife used to run my Tundra at the track. The day I put a K&N filter it slowed down a bit. Not sure if it was due to any flow issues or the computer getting weirded out from the new style filter. Put a Denso OEM back on.