That's not what the close button does and it typically requires a few confirmations from other users, so you can't close things randomly yourself. Almost all close votes are reasonable - have a look at the "close vote" moderation queue.
It may seem beginner hostile sometimes, but in practice it's mostly: you can't have a personal approach to everyone when looking through hundreds of messages.
I don't disagree. I just don't think this can be enforced in any way. Community defines itself. We've got 75042 people who can cast close votes. Requiring multiple votes helps, but you can't make that many people behave the same way with the same values.
It may seem beginner hostile sometimes, but in practice it's mostly: you can't have a personal approach to everyone when looking through hundreds of messages.