Characters and entertainment are indeed a main reason I go to the parks on a regular basis. And I agree, if they were stripped from AC, it would kill the heart of that land as it currently exists. I am glad AC is getting two new attractions even if I'll never go on them due to motion sickness, so long as they keep the characters around who bring such fun interactions on a daily basis to guests. And I'm still happy they made one attraction, Web Slingers, that I could go on.
Not everyone wants a land that is all thrill rides.
GP used to have more entertainment - Minnie's Flygirls and a singing cowboy type are ones I can think of offhand - but sadly they were part of a major removal of DCA entertainment around a decade ago.

However, I still really enjoy strolling through GP and find it one of the most peaceful places in DLR. There's just a... gentle appeal to it.
I love Cars Land but sadly entertainment was stripped out of there a while ago, too, when they removed DJ's show. Though I always will happily stop by for the dusk lighting show. I guess the cars are characters but they are not the type of interactions I seek - they feel more like posing with a parade float lol. But I do think Cars Land is objectively the best part of DCA. It's truly flat out stepping inside a movie.