Could the Aleutians become an invasion route to Japan?

What effect would an American attack on Japan along the Aleutian chain have had on defenses elsewhere?

It was possible in theory, but currents, distance, cold, and the extra support burden made the Aleutian route much harder than the routes the Allies actually used.

Logistics mattered more than map distance alone. Operating east-to-west along the island chain would require ships, bases, supplies, and personnel able to endure severe currents, long distances, and extreme cold. The route was possible, but it was markedly less practical than the approaches the Allies chose.