The question is not whether the features are there. Well, I'm sure there are lots of people who bag on Luminous without understanding anything about anything, but there are very real reasons why we have critique the choice for Square Enix to invest heavily in making and maintaining an in-house engine.
Using an off the shelf engine these days gives you all the same feature sets, and also assures ease of use, strong technical support, and the fact that you can more easily hire people who will already have experience in using such tools and be familiar with the workflow. Hence proprietary technology becomes less and less useful unless it is truly best of class and gives you an edge in performance or does something for you that nothing in the market is readily able to do.
So when the reaction is "well other than the subpar performance, this looks alright, it seems to do what all other engines in the market now already does, definitely not lacking!" then the question is, why invest all that money into this to begin with?
If you spend more than the price of a Big Mac to buy ingredients to go home and make a burger that tastes pretty much like a Big Mac but took you longer to make than to buy, wouldn't you say that's a waste of your time and money?
Using an off the shelf engine these days gives you all the same feature sets, and also assures ease of use, strong technical support, and the fact that you can more easily hire people who will already have experience in using such tools and be familiar with the workflow. Hence proprietary technology becomes less and less useful unless it is truly best of class and gives you an edge in performance or does something for you that nothing in the market is readily able to do.
So when the reaction is "well other than the subpar performance, this looks alright, it seems to do what all other engines in the market now already does, definitely not lacking!" then the question is, why invest all that money into this to begin with?
If you spend more than the price of a Big Mac to buy ingredients to go home and make a burger that tastes pretty much like a Big Mac but took you longer to make than to buy, wouldn't you say that's a waste of your time and money?