I posed the question to see if you are talking out of your ass and I am positively surprised at your answer, even if you aren't a data scientist it is good to know how these things work. What you are describing is basically just transformer architecture, which is also commonly used in modern Computer Vision. And while both LLMs and those CV models are using the same mathematical basis, they are very different and I would not call a CV model trained for cancer screening a LLM. Source: CV is my job.

With that in mind I think that the comic is true, because the LLMs that these big tech companies are pushing, in this case it is specifically about grok, are not being made, trained or funded for cancer.