It's cute to see them supporting each other with no expectations of rewards! Just pure friendship!
Honestly, I'm more surprised that these vending machines are every other floor. It's a little too convenient? I could imagine it every 5 floors, or just before/after the boss to allow players to recover. But every other? Though I guess since they're on the 80'th, it may be a difficulty level thing. Previous floors 1-10 didn't have any, then 20-30 had one, and so on, until the 80th floors having more?