Not really. We are talking about animate males here. Likely people though possibly some animals. When you say about a group of people that they are not high, it is a good thing. It means that they are not under influence of drugs. People are tall, buildings are tall, trees are tall, giraffes are tall. The only thing I can think of right now that is high are mountains. And those are in Czech feminine.
How would you translate the following hypothetical conversation between two air traffic controllers?
Scene: Honza and Petr are looking out the window at a plane piloted by flight student Michal and his instructor Mr Stanislav, as they are trying to land. Honza has doubts concerning the quality of their attempt.
— Are they not a bit high, Petr?
— No Honza, they are not high.