On the UK Folk Scene there has always been too much slavish imitation - and what is worse, slavish imitation of Revival singers, not Traditional singers (although I did once hear someone do a Harry Cox impersonation in front of the great man himself!).
The other problem with the UK Folk Scene is a tendency to want to turn Folk Music into Rock Music - what we get, of course, is more Rock Music - and a minor form of Rock Music, at that, which soon goes out of fashion.
It seems to me that the best way to honour Tradional Music is to view it (as Cecil Sharp did) as an evolutionary form which is not particularly suited to revolution.