You may find some VERY marginal glute development in someone who is untrained, as a beginner is very sensitive to growth and stimulus, but if you want anything even remotely substantial past the very early beginner stage, a stairmaster is not going to work. Please stop spreading misinformation, there’s people here looking for good advice, not bullshit.
Okay. How about you look up research on muscle growth from cardio. Based on the research, you actually DO GROW MUSCLE FROM CARDIO. Maybe learn a little bit before saying I’m spreading “misinformation,” because it’s not my fault you’re too lazy to do cardio. Doing cardio alone won’t get you huge legs, but it will make them bigger
You also said, and I quote, “it’s literally just for cardio.” Why would someone looking for a more defined butt not want to do something that offers “marginal glute development”? Again, just because you may not want to use the stairmaster does not mean it can’t be helpful for other people looking for more glute development. I didn’t say that only using the stairmaster would build massive glutes, but it will definitely help to add some mass on top of other exercises. Is that better?