How worthless is Philosophy?

[Variachial]

My problems with modern "philosophers" are
1 - Usually their ideas have already been implemented by people who are smarter than them.
2 - They see their ideas as revolutionary, but will likely not document these ideas except for on social media such as Twitter or Facebook.
3 - They won't even consider others points of views, and will make shitty Ad Hominem arguments to avoid productive conversation.

I certainly agree that these three points are bad things.

I wonder which modern philosophers you're thinking about. I'm no expert, but I can't think of any of the well-known ones who match the above descriptions.

Who I'm mostly referring to here are those Twitter or Facebook users with "Philosopher" in their bio, usually their only way of expressing ideas is not to write a book or even just make a speech, but to post on these websites. I can't name any off the top-of-my-head, but they're usually White, millennial, Atheistic or Agnostic, and left-leaning. This is not to say there are NO good modern philosophers, however the title is muddled by Twitter users.