Doesn't Phantasialand have a knockoff Great Movie Ride?
Also Efteling has rides inspired by Small World & Haunted Mansion
You are correct: in the 70s and 80s many European parks built attractions that were Disney ripoffs to some degree. Not many Europeans had visited the US Disney parks and Disneyland Paris did not yet exist. So who was going to know? So, indeed, Phantasialand has a Great Movie Ride ripoff, as well as a Big Thunder Mountain clone. Both of lesser quality than the Disney versions of course. But in recent years this park has also shown that they can come up with original concepts and execute these with attention to detail (Maus au Chocolat, Chiapas, Taron). Besides, the Movie Ride ripoff at least is expected to be removed in the coming years.
As for Efteling: indeed, it has rides that are "inspired by" Disney attractions. That means that they share part of the concept, but the execution is very different. Carnaval Festival is a journey around the world, like Small World, but the style and message are very different. Eftelings haunted castle has very little in common with Haunted Mansion, except for the fact that it is haunted and Pepper's ghosts are used. But the theme is much darker than Disney's. Fata Morgana was inspired by Pirates of the Caribbean, in the sense that they wanted to build a high-quality darkride with boats. They were wise enough not to go with the pirate theme, but settled on the Arabian Nights. Efteling has used its own unique style from the very beginning and it shows.
These examples are quite different from Europa Park: Europa Park has copied not only the concepts, but the executions as well. So they have a dinosaur ride, an Epcot-like dome, their haunted house has singing busts, their pirates darkride has scenes and vignettes that are almost carbon copies of the Disney originals. In my opinion such unoriginality is far below the level that a major player like Europa Park should aim for. Of course, these things were built in another era. But still, with all the big additions and improvements they are working on, couldn't they improve or change these relatively minor things? Just get rid of the darkride scenes that were copied from Disney and replace them. Then you can still have a pirate ride, but it will be much improved!
By the way: Storybookland in Disneyland Anaheim was inspired by the Dutch park Madurodam (which contains miniature versions of famous Dutch buildings). Walt visited the Netherlands in 1951 and later sent his key designer Ken Anderson to study the park. So there was some inspiration in the opposite direction as well!