Makes sense, they are reminiscent of old YouTube with the low production value, no jump cuts, and calm flow. The 1st and the 3rd one made me feel nostalgic too, the 2nd one is forgettable. In the 1st one "Heaven is a Place on Earth" is playing on radio which is an 80s song, and even though I wasn't alive back then, songs from that era played on the radio when I was younger from time to time and it brings back memories of playing Vice City. Furthermore, it's a recording of a sunset, those mark the end of a day and make me think about endings in a wider sense and how time in general just passes so it serves to add nostalgic value to the video. I have nothing interesting to say about the 2nd one, him showing the viewer his safe place it's sort-of comfy I guess. The way he talks about his childhood and the "good old days" in the 3rd one with the sound of children playing in the background while comparing it to the hellish present is something I rarely see in the media, idk if it's because actually rare or because I don't gravitate to such videos. The combination of everything in the 3rd one makes me really think back to simpler days when I was blind to how the world works.