Public forums answer the questions that are safe to ask in public. What actually moves an application is a referral from someone inside, a mock interview from someone who grades them, and a private answer about whether a team is worth joining. That needs a small room, not a big one.
You ask, with the posting and the reason you are a fit. Members inside that company decide for themselves. Nobody is obliged to refer anyone, and a referral you have not earned is worth little anyway — it is their reputation being spent.
What makes the ask work is having something to point at: a track finished, a challenge on the leaderboard, a project written up. That is the other reason the curriculum is free.
