It's a matter of individual taste. Do you also post in Solasta's Dev forum and ask them to make their game look more like BG3 because Solasta is ugly?
It's like telling an artist "Why don't you make your music more like THAT guy? I like his better than yours!"
First of all that's very impolite and entitled. And second, you always have the choice to play what you like.
You should look into it yourself. They have a specific post in the Solasta's forums about this very thing. They think BG3 is gorgeous, and give ways to give good feedback. So they kinda of encourage it.
It isn't rude nor entitled in the least bit. Entitled, that word gets A LOT of misuse and overuse these days.
Just because someone has a different opinion than yours doesn't make them rude or entitled. It could have been worded better, but both games could stand to learn something from one another. We all make posts in haste, and could stand to stop and read over them most times. All of us.
The perfect dnd game would be the love child of these two games.