Trimming Flowers on Coleus

Many of the coleus plants I have around the yard are growing flower spikes. Not so attractive, but this bee was hanging out the other day.

Do you trim back the flowers? I guessed that the flowers created the leaves, but I think I am wrong. According to this short piece in SF Gate:

Cut or pinch flower spikes back to a leaf node as they appear. Coleus flowers are light purple or blue and develop at the ends of shoots. Pinching off flowers before they bloom and go to seed saves the plant energy and encourages vegetative growth.

I won't be saving seeds from these plants so I am going to cut them off.