

Not monotonous but non-creative. Any machine can do non-crative work. No machine can do creative work. You don’t need creativity to farm food, you do need creativity to invent new medicine.
In an average company that isn’t scaled worldwide, usually the cost of labour is 40-50% (paying wages). This means if we replace humans with robots, doing repetitive and non-creative work, we can make stuff cheaper by a lot. OFC unless the company boss, who is then left alone with all the profits, just decides to keep the prices with no people he needs to pay anymore.

Media is more audio, video, image. Which fits social media.
Most forums and blogs are text-based or primary text. There is no blog sharing only images/videos/audio as posts. Also no such forum.
That would be my key differentiation - forums and IRC is social, but not really media.