I don't remember solipsism being legitimised as an end by philosophy and instead a fundamental part used by various philosophies but I'm not a scholar. A genuine solipsistic individual wouldn't even be sapient by definition, that requires perceiving reality.
The display uses pixels to form an visual "illusion", that lasy reply wasn't about philosophy but the word "illusion" is fun. Some studies have been done about the focused mind going into beta and lower while doing this so there's the "dream" and "hypnosis", it's really considered more a trance.
So was "I" ever "posting" on "/sol/", is that even possible, which school of thought makes it possible here, I know of some but discussing this is better then entry philosophy.