If you are making a pixel artstyle, you have to either edit EVERY SINGLE texture in your game manually, by double clicking the texture, scroll down to the filter setting, then set it to nearest neighbor, or use the property matrix which again is several clicks and doesn’t affect all assets. There used to be a button to do this, but it was removed (apply paper2D settings).
And this is just for one type of file, imagine the entire project. UE and UEFN need to be able to adjust to your workflow, especially UEFN which doesn’t support plugins.