The term valid is used to establish that something is logically correct. Having a logically reasonable basis for an argument or debate is called valid. This can also be considered an acceptable thing when you are discussing something.

People consider a point valid on social media when it makes sense according to the general understanding of a perspective. Being called valid is a positive affirmation because you have made your point, and the other person has also understood it.

Example

For example, you engage in a legal debate with someone and talk based on logic and facts. Your points will automatically be considered valid by the other person.