Yule is not the name of a Scandinavian fertility god.
Freyja, is the goddess associated wit fertility, among other things.
Freyr, is the god associated with fertility, among other things.
Wicca was created in the 1950s. It is not ancient.
There is no record of Druids "kissing under mistletoe". Mistletoe does represent fertility, though. Pliny the Elder (not a Celt) wrote the only known account of a ritual involving mistletoe. His account was not firsthand.
There was no "Saturnalia" tree. Saturnalia was a Roman holiday. The modern Christmas tree originated in medieval Livonia.
Sleipnir was indeed Odin's 8-legged steed, but what does that have to do with hoofbeats on rooftops?
I agree with the sentiment of having a good time and making merry this time of year, but much of the "info" from this was pulled out of someone's arse.
The story behind St. Nick and why we hang stockings has cracked me up for years.