Is touch a sensory verb? Can it be used as a linking verb? If you don’t know, don’t talk nonsense. I want an authoritative explanation and add 20 points.

Touch is a sensory verb, but it is not a linking verb.

After the copula, it can indeed be followed by an adjective to form a copula structure.

For example:

He appeared happy. He appeared happy.

The theory turned out wrong. The theory turned out wrong.

The weather remained cold. The weather remained cold.