It shouldn’t be a surprise that LLM wants to get to the resolution of the plott quickly, all literature they’ve been fed always leads to the resolution. That it is in fact the suspension, the road to the solution, which is what keeps the story interesting isn’t something an LLM can understand, because it never analyses the stories. Only what words are used.
Well, there is some data/rumours out there, stemming from a Dutch Tesla forum, that suggests that some fast charging might be beneficial for battery longevity. This seems to corroborate that. I can’t remember the case for always fast charging, though.