The saying goes if you’re not the customer, you’re the product. Now, you’re both. Every big social media app is testing subscriptions. It's a business model that comes with a perverse incentive. Just like airlines, if you make life worse, more people will pay.
Ask ChatGPT if Reddit is a social media. It will give you answer “yes”, while noting features that are different from FB. ChatGPT is a good way to judge what is “usually” considered as this or that.
In global context, maybe. In this thread, not quite. I do not consider ChatGPT to be objective or that it understands context of an external source.