That analogy is nonsense. We're actually making measurable gains in AI and the pace of progress is only increasing. Belief in this isn't based on faith, it is based on empirical evidence.
Elevator- and construction-technology has been improving for centuries. We will surely make a Tower of Babel that reaches the top of the Sky—it’s only a question of when.
Are you suggesting that artificial minds are unattainable in principle, or that the much-hyped language models are elevators for a task that requires rockets?