The most amazing thing is, Alund isn't playing well. Zeballos didn't play a Rosol-like God-Match but he was in his top 5% best level. Alund is playing his normal, shaky, backhand-less game that loses in Challengers.
We should be appreciative of Federer though, because we will never see anything like him again. The fact he can still compete for slams ever after the erosion of his physical skills is really a greater testament to the natural talent he has than the period of time when he was dominating the tour.