Regarding this question: Would a cup of a superhydrophobic material ever fill with water?
I am completely baffled by the reason for the closure. "Not mainstream physics"?
The question as posed asks the reader to assume a perfectly hydrophobic material: this is not different from other idealized models in physics, such as an "ideal gas", or "rigid body" or "point particle". Everything else in the question is completely standard statistical thermodynamics + fluid mechanics + surface science.
Is the idealized material the problem or something else?
The material is assumed as a thought experiment as the question says right at the beginning; it can't be non-standard physics because I don't claim it actually exists. This assumption is only meant to simplify the analysis of the problem, but in fact there are materials which come pretty close to that behavior, with water contact angles > 170 degrees. So it is not very much of a stretch from real behavior.
Please tell me how the question needs to be modified so it can be reopened.
P.S. Just for fun: water droplet on a surface, from https://link.springer.com/article/10.1007/s10971-018-4825-5
