You are correct, there has been a trend over time for the end of the year to have a run up in the prices of crypto across the board. Many people will say that it is due to the Asian holidays and people buying gifts.
With all of the regulations that have come and gone over the past year in the crypto space, it will be interesting to see if that trend still holds true.
Personally, I think that we will see another bullish trend through the end of the year and then after that things will move into another bull cycle.
Humans tend to be creatures of habit and there is nothing I have seen so far to suggest that this coming year will be any different from the previous ones. Sure the highs might be a little higher or the lows a little lower, but the overall bull/bear cycle will probably remain the same.