There is no evidence at all of there being a 2018 UK Folk Revival.

There is plenty of anecdotal evidence that folk is widely available even on this thread. That is no different to the anecdotal evidence you are supplying for evidence of decline apart from there is more to suggest that your analysis is incorrect. I have also provided data driven evidence that the number of festivals is now greater than it was 10 years ago. If you provide any actual data that things are different I may be swayed.

BTW - that is your automatic default position to anything certain posters contribute gives you away as one who was a member but cannot or will not log in under your own Mudcat name for some reason. I have a good idea who.