Making use of the the term stupid for a new investor who thinks that bitcoin is expensive is very wrong I believe you have also thought same before you finally know that one can actually purchase bitcoin little by little fraction without buying all of it at ones, most of us here has thought that the way so i think it's normal if a new investor thinks that one need to be well doing before before coming to think of bitcoin investment it's with tiime they will know that they were actually wrong thinking that bitcoin investment is only for the rich citizens.
If they don't want to be called stupid then they should start learning bitcoin from the basics before saying it's expensive.
Because after all those who say it's expensive only see from the outside but don't want to get to know more about what bitcoin is and I think stupid words are also concrete in this case because they talk but don't understand what they are talking about.
They are only focused on the value they have and how to think about how to profit in a short time which is impossible with the current value, therefore they consider bitcoin too expensive. But if they already know how bitcoin works including by collecting (buying) then they will not talk carelessly because they realize that saying bitcoin is expensive is a mistake.