This is pedantic. Everybody knows about evolution and natural selection and the intricacies behind the process, it's old news.
Energy flows into and out of a system in a way where the configuration of particles begins arranging itself in lower and lower entropy formulations. The net entropy of the universe remains forever increasing but within this system it begins lowering. One of these low entropy formulation begins self replication imperfectly thereby introducing memory and mutation into the system allowing complexity to build on itself thereby producing particle configurations of immense low entropy and complexity.
Is there any "intent" in the description above? No. But you must consider the factor below:
Clearly your hands weren't designed with an intelligent intent. Yet there is something different about your hand then there is a rock. What is the word used to describe this difference? "Design" flows better, that's it, no need to get into "illogical fallacies."
>We're finding microorganisms that can consume plastic. Does that mean they evolved for the purpose of eating plastic, a substance not typically found in nature?
>In my worldview, no, they weren't. They can consume plastic, but that has no bearing on their purpose,
I don't know if you can see this, but your argument here is not profound. You are making a linguistic argument. You are arguing for the definition of the word "Purpose" or "Design." We BOTH know EXACTLY what is going on with natural selection and "design" is simply an easier way to express a point that your hand is a lower entropy configuration of atoms that is clearly very efficient at grasping things. But my previous sentence is an inefficient way of saying it. I could just say your hand is designed for the purpose of grasping things and the rock is not.