I'll travel for a Wacky Worm in the arse end of France, so not sure where this enthusiast elitism is coming from? Half the guests probably won't know about Cedar Point and the like, does it really detract from their personal enjoyment? I mean the most liked ride by guests at PA is Baco! And 90% of us know that's wrong...
Thorpe (and Merlin parks as a whole) have remained pretty stationary over the years in the last decade that's true, but mostly through have consistent expansion the year before and some mismanagement... Several parks in Europe especially have taken advantage of not having much prior to this decade and going "right, this Gerstlauer is cheap but is interesting, let's buy that as our new signature ride", much like Bobbie Jobbie and Walibi Alpes have done...
On the other side the likes of Walibi Holland and Phantasialand already had a strong base to begin with, though Phantasialand was more about complete redevelopment of existing areas of the park... Walibi have just chosen two fantastic rides to compliment their pre-existing icon that is Goliath (though Untamed might become the new one)...
There's many things to dislike Thorpe for but the ride lineup isn't one of them... Think a lot of this is the realisation that the UK parks have sat still whilst the world adds a higher quality of ride comparatively...