As a heathen, this is bordering on offensive. The difference is intent. This isn't paganism hiding in Christianity. This is intentional organized decisions to

As a heathen, this is bordering on offensive. The difference is intent. This isn't paganism hiding in Christianity. This is intentional organized decisions to convert pagan holidays to Christian ones. It is a radically successful attempt to eradicate them not "the old hiding in the new". Christmas stands out even more as an example of it, literally the time of the celebration was chosen by committee to displace winter solstice holidays. Plenty of religions have solstice holidays and and harvest celebrations, and likely other older religions did the same, but Christianity is the only one in living memory that actively subverts and attempts to consume the holidays of native populations they wish to convert.