I wouldn't own an RV without a dinette.
I *like* having a table where we can all sit together and eat, play games, etc. Yes, its more fun to do that outside at a picnic table, but anyone that's camped for a while knows that the weather has a way of making that impossible or very uncomfortable sometimes.
And, that's not to mention the storage space underneath you give up if you don't have a dinette. And, the occasional extra sleeping space is nice, too.
Yes, the seat cushions on some dinettes can be not quite the most comfortable thing in the world. That is why you have to check these things out, BEFORE you buy an RV. If the dinette ain't comfortable, then find another model. Not all dinette cushions are uncomfortable.
If you don't like a dinette, look at units that have the free standing chair and tables. Several brands offer that as an option.
I'd say the RV industry is doing just fine, by offering a choice of a dinette or free standing chairs, table. That way we all can get something we are happy with, without shoving our wants, preferences down everyone else's throats that may prefer something else. :)