Taking your position to its logical conclusion implies that we shouldn't try to mitigate DDoSes either.
In many cases, what the other server voluntarily transmits has so far been based on the tacit assumption that a person, with person-level time and computational power, is doing the receiving. While in principle a machine could be doing it even in pre-LLM times, in practice many websites, including all the biggest ones, have implemented a wide range of approaches to try to curb machine access, starting with user agent checks and rate limits but by no means ending there.
The question is: Given the new landscape, where this assumption increasingly does not hold (because AI agents are increasingly able to simulate anything a person could do online), would those servers voluntarily transmit that data? In many cases, the answer is no.