Isnt a person being put in the friend zone more of the fault of the friendzone-ee rather than the friendzone-er? Seems like the person being friend-zoned isn't communicating his/her intentions properly.

No. Communication is a two-way street. Most, not all (but more than some) people know the person in the Friend Zone likes them more than a friend. If you allow someone who clearly has more feelings to stay in your life for your own benefit, then you're equally guilty. Most people think simply stating their intent or non-intent absolves them of responsibility. That's now how this works. That's not how any of this works!
Thanks for the question. We talk more about why both the friendzone-ee and friendzone-er are responsible at around 57min of TGOS Ep 67