Coffee addict; Rav Belsky explained the following: on yom kippur we bring two se’irim. They look identical, one goes to azazel as a symbol of the aveiros of klal yisroel, it dies a violent death to show the results of sin, and the other is brought in the kodesh hakedoshim.
When yaakov and eisav brought their gifts to yitzchok, chazal say it was yom kippur. They brought two se’irim; when yaakov came in, the re’ach of gan eden filled the room. When eisav came in, the pischa shel gehinnom opened underneath him.
Yom kippur and the yomin noraim are times to discern truth from falsehood, to be mavchin and indeed to judge what we are doing. If that drives a wedge between people who are not Torah Jews and those of us who strive to be, then so be it. I can think of no better time to engage in the self improvement one achieves by casting off all foreign junk and tumah that defines MO.