I would disagree because it is known how a private key can be created and confirmed, it is just incredibly difficult. To have no hope at all you need something like one-time pad cryptography (as described under unbreakable code in the Wikipedia about brute force) where you can not confirm that you actually found the solution or simply an unknown process of creating the private key. Since this is not the case bitcoin can be brute forced.
In any case I agree to not call it bruteforceable since this creates the wrong understanding that there would actually be a possible at this moment.
Still if we see bitcoin in maybe 100o years where many addresses are used to store small amounts of bitcoin the chances are getting higher and higher to crack a random adress that hold some amount of bitcoin and there is basically nothing that could be done about it.