I haven't been in a while, but its definitely much easier than it used to be. The 1st climb between the toll booth and the road has been made much easier, and the 2nd section of singletrack climb which leads you to the fireroad which takes you to the freeride area used to be a total bitch.
I reckon I go to Cwmcarn once or twice a year, and each time I notice they have removed a hard bit and replaced it with something a bit wider, a bit less steep or a bit less rooty/rocky, which I guess makes the trail a lot more sustainable and less maintenance intensive, however it also has the knock on effect of making it a little bit easier to ride.
Still good fun, however it is definitely being dumbed down.