Quite interesting these Druids for at least my self had thought they had disappeared in time in as well as the Kelts. But as you have brought forward, this is not so, for by proof of your presentation they are alive and well.
Although as a modern and reasonable educated person, do not believe in their beliefs, nor though at simular do not dismiss the ancients. For if enough or a thousand Muslims touch the ground with their heads, the earth will feel their touch. With the same token of so many Druids/Kelts are to believe and profess their beliefs, there may be some thing to come about. For it is not wise to dismiss some thing we do not understand, in as well as the Wickerman:
I think there is something refreshing with giving honor to the nature. Even the traditional religions added some of these pagan traditions into their calendars. We have St. John night which is the shortest in the year and also Christmas that is during the shortest part of the year.