Buddha said that each method is like a raft, like a boat: use it to go to the other shore, but then leave it there and forget all about it and go on your way. There is no need to carry the raft on your head. If you carry the raft on your head you are just stupid.
But this is what is happening: millions of people become too addicted to their method. And the method CAN be addictive because it gives such beautiful experiences. The last barrier is the method, the last barrier is the bridge.
The bridge takes you to the other shore: certainly it is a help, and you should be grateful to it, and you should be thankful to it. But it can become a problem. You may fall in love with the bridge and you may make your house on the bridge. And if you start living on the bridge, you are neither of this shore nor of that shore; you are in a kind of limbo. And many so-called religious practitioners live in a kind of limbo -- they are neither of this world nor of that. They have become addicted to the bridge.