Good wishes and supportive words and actions are a good thing whether there is an occasion or not.
Pride month should not have to exist at all. But in many locations including much of the USA, people can be fired from their jobs just for the sexual preference and refused services. It's not really like Christmas but is closer to Tuesday December 10 as Human Rights Day 2019, or Black Pride days designated in locations. Whether wishing an out homosexual a happy Pride Month, wearing a pin or button, or offering a hug, or just a smile, there is nothing wrong with sign of support to a group oppressed.
Attached is Straight Ally Flag to say support GLBTQ, but Straight.