Just enforcing the dress code is fine with me. At Artist Point a couple years ago a man actually came in and was seated and he was wearing overall's with NO shirt on

It was actually quite a sight considering his bald head was covered in tatoos and he was well over six feet and at least 300lbs.

the hairy back for all the "World" to see
Sorry, couldn't help but think of that old joke:
Where does a 500 lb gorilla sit?
Anywhere he wants.
I always wondered if people were asked to leave a restaurant because of how they were dressed.
We were at Y&Y June 20th for dinner and as we were leaving there was a family checking in for dinner, the 2 tween daughters were in bikinis and sneakers. No shorts on, no shirts on, just a little bathing suit...and the host didnt say a word.
Hmm...I have very mixed feelings about this. WDW is...an amusement park. A huge, wonderful, amazing, fantastic, magical

amusement park in a class by itself...
...but an amusement park all the same. And it's an amusement park that is located in a state famous for incredibly hot muggy weather. And it has a few rides (like Splash, and Kali River Rapids), that are designed to get you wet and cool you off. Or totally soak your clothes.
So, I think any restaurant located
IN any of the parks is going to have to be pretty lenient in dress code -- flip flops, T-shirts, and shorts will abound. I do think bikinis in a sit down restaurant are a bit much, and I'd never let my kids wear a bathing suit to a restaurant -- not even a Denny's

But who knows? The girls could have just been totally soaked head to foot on Kali, and their clothes were drying on a railing outside?
Now, for the restaurants at the hotels...many of them are more casual (for example Kona) and park wear should be totally fine -- shoes, shirt, hopefully not torn or dirty. For the nicer signature restaurants, yes it would be nice if people spiffed up a bit before coming to dinner. But the logistics of leaving a park, catching one or two buses, and/or monorail, and/or boat, and/or taxi --
back to your room to get showered and changed for dinner --
then taking another two buses, and/or monorail, and/or boat, and/or taxi, hoping you make your ADR on time --
it's just not my idea of a relaxing evening. Then after dinner, you have to either reverse the travel plan to go back to your room to change again, or head out to a park for the evening in your dressy clothes.
You know, come to think of it, this is probably why I've avoided making ADR's at one of the signature restaurants
But for some guests, it's all about the dining, and they'd rather be at CG or Citrico's than riding the rides anyway...so it all depends on what you want out of your vacation, what makes your family happy
But also...I don't really pay attention or critique what other people are wearing at other tables around me

That's their business. If I don't like it, I just don't look at them (some things might make me raise my eyebrows and giggle, but I don't let it ruin my meal). I'm a lot more likely to be upset by unseemly behavior of other diners -- like if they are rude to the wait staff, or get drunk, loud and obnoxious, or their kids are screaming and throwing a fit. I'd rather see an enforced
behavior code than an enforced
dress code
