WIBTAH for staying up late in my dorm when my roommate is doing the same thing?

Okay so for context, Im (19F) in college and my roommate (17NB), to put it bluntly, stays up and/or out VERY VERY LATE. I am talking till 3 am most nights while I clock it in anywhere between 11 PM and 1 am at the latest.

Anyway, as of writing this (Current time: 2:20 AM) I didn't and still don't, feel tired whatsoever. I was just writing and watching videos on the internet; classic behavior, when my roommate asked if I was going to bed anytime soon and I said "Nah not really." They then got upset I wasnt going to bed and turned off the lights (mind you they have fallen asleep multiple times before with the light on), and I can see the screen of them on their phone from their bed. So THEY clearly arn't sleeping either.

I personally see it as unfair that when they finally want to settle in it means that I have to as well, but when they want to stay up later it means that I'm not allowed to complain.

I really don't want to start drama with my roommate again and the school year will be over soon anyway so I personally see it as useless to bring it up but IDK.

WIBTAH for complaining?