Sure, having certainty about any market is dangerous. But, to a certain degree walls are sometimes used to create misperception of support/resistance. Is something meant to create misperception not the definition of an illusion? I'm not sure what you're trying to say with the bold part, I got a parse error trying to read it.
All of those "buy walls" are sooo fake... I watch many of those people cancel ALL THE TIME! That's what happens with unregulated things!!! As a perma-bear, I can tell you BTC price chart looks exactly the same as a penny stock pump and dump that waves widly in the wind back n forth back n forth until its literally worth $0.00