[Karrot_Kream]

> Social media is where one shares one's social life (it's in the name!).

So TikTok isn't social media because most people don't lost content and those that do rarely post about their social life?

Twitter isn't social media because most people don't post about their social life?

[GJim]

> So TikTok

Is a video sharing platform.

> rarely post about their social life

Note your correct use of the word rarely and consider my comment about crossover.

> Twitter

Xitter is a 'micro' blogging site.

> most people don't post about their social life

Again, note your observation of the most common uses of that platform and consider my comment about crossover.

[Karrot_Kream]

Based on my understanding of your comment, the crossover exceptions dominate the discriminative power of the categories, so the taxonomy feels useless.