I'm not agree with you. The game already looks good on 2 textures.
Moreover. New texture resolution will not change anything. A similar article about bad graphics will appear. Also do not forget - everyone has different computers. There are countries where people do not even upgrade the computer. In some countries, people think about what to pay for their studies, car repairs, and so on.
I understand that even so weak computers will disappear. But then the developers themselves will decide the solution.
At the moment, our respected IndieStone guys are spending a lot of time and effort on optimization. It is better to raise the topic not about improving graphics, but about a full transition from Java to Visual.
The problem of my computer is in a weak processor. For the good burned out.
2 core processor 1.9 <==The problem of my computer (was previously a 4-core 2.3 processor. Which for me and my games was more than enough.)
4 gb of RAM
1 gb video