I also love how these guys just straight up pretend that it's still 1997 and that 3D PC gaming is either a luxury or non-existent. These guys brag about how "advanced" their engines are, even though they are just isometric engines and dead bodies not disappearing isn't something to write home about.
Joking aside, I've played 3D horde/twin-stick shooters with hundreds of enemies onscreen and there are some things that people just don't get about the reality of a 3D art style (perspective, objects blocking one another, 3D physics/collision, slopes, camera management). A well-made isometric game would have the luxury of clean 2D game logic and readability.