Nothing in the world is reliable, just as BTC is not reliable.
It can't be called a store of value because it rotates. It's value sometimes upswings and sometimes lowerings. It can't be said that the BTC store could be very worthwhile in the future. Because it is skeptical.
People can think whatever they want but I will still use it as a currency and not any value. People think that they could put in 10 thousand dollars into bitcoin and get roughly 1 bitcoin and change, they could keep it there, if inflation happens their bitcoin will go up and in theory they will not lose any money, sure they are "earning" some but at the same time life gets more expensive so they are keeping their "value" which is the idea of store of value.
I do not see bitcoin like that, I see it as a thing that you can spend and earn, just like dollars, just like euros, I see bitcoin as a currency. I will work, earn some, I will then go out and spend it, that is what bitcoin is for me. So to speak, I agree that it is not a store of value, not because it can't be but because I do not use it that way at all.