I'm confused how Hideout fell so low here. It's a cantrip trasher. Sure it's a bit slow but it has incidental +2 Actions and it could move up a few spots.
Have you seen what's above it? Renaissance is a stack expansion (even though I can see some cards dropping below hideout).
I guess with Hideout, it's slow at thinning your deck when not just targetting treasure. But, trashing copper early is not great for your economy, and trashing estate is just economy neutral. A lot of other early game trashers give a more meaningful benefit for the early game than Hideout, which is a bit rough for a $4. I see it as a more convenient early trasher than Sacrifice but worse than Spice Merchant Or anything that gives +$2 on trashing Estates or +$3 on trashing copper (Salvager, Priest, Moneylender).
It is a trasher and a village, should not be undersold as a "cantrip trasher". While Junk Dealer is a cantrip trasher with +coin, Hideout has +action.
The tricky thing with Hideout is that you want a trasher early in the game but you want a village later in the game. (If you want a useful village early in the game, you'd go for Walled Village.) Junk Dealer's bonus is quite a bit more useful in the early game. The compulsory trashing can be an annoyance with both cards but I can see the extra action of Hideout being more useful for the engine than Junk Dealer's one coin, so you may be more willing to sac a card to keep your engine running.
A tricky card. A wonderful card.