I dont race against the AI unless I have to, I find them lifeless even in good implementations because like you said, you know they're not real. That alone changes the dynamic of the racing.
I am sympathetic to those who don't race online though and are unhappy with what GT does currently offer, which is why I want to see change. Racing against AI is pretty much all we had in racing games for a long time, and it's a shame to see efforts to improve them fall through - after all, those AI races are what made the GT franchise so popular, not online.
I get what you’re saying, but I’m not gonna try to get the developers to put more effort into outdated AI technology either, it’s the past, not the future. It seems some people are stuck in the past, or their egos can’t handle not finishing first every time in online racing. Online racing is so much better than AI racing, that it wouldn’t bother me at all if no game ever had AI again.