Images are mostly used to provide more clarity on a subject or a discussion; it one can create an image on their own.
Take market chat, for example. People do screenshot them to demonstrate the market movement, and they are posting them here without including the source link, which is fine provided they did not give fake or irrelevant information about it.
So please the community should clear if I can banned or tagged from copying someone's image in creating my topic without adding a reference link.
No!
But don't lie to be the original creator of the image, as it will trigger further investigation.
I remember a case of a forum member who posted an image of something that has happened in the past, and he is referring to his present condition that he is the original source of the picture, which was a lie because some forum members do further research and bring out the source of the image. Therefore, I will advise you to include the image source link.