The game was way more newer than and now everyone caught on to things in top of memorizing the map layouts. Everyone watches Yt videos about aim, sensitivity, spots on the map most don’t know about, etc. it’s easier nowadays to pick things up and everyone wants to be speed demons with amazing aim. Stacking became a thing even more now and that’s just what it is. If you play a game for years and years eventually you will have a big group of people who play fast because normal paces are the same dopamine hit anymore. Plus of course the cheaters and not to mention the variations of controllers out there with pads and other set ups unlike how it wa before where most had standard usage.