I dunno if it counts--I don't really wear diapers. But! My friend has a bleeding disorder where she has to wear disposable underwear most of the time. I borrowed one once because I was staying with her and ran out of pads... and let me tell you, it was really comforting, actually. I didn't have to worry about whether the pad was catching everything. Genuinely, it put me more at ease. So I get it, for sure.
I might actually transition to disposable underwear bc I have slight incontinence issues, and it would just be easier overall. Pads are a horror to work with for me, anyway. Can never get them to stay in place. I have a lot of stained underwear.
Bottom line? I can absolutely see where wearing them during that time of the month can be comforting. Use on, I say!