This is my understanding, and rightly or wrongly it’s the theory underlying the artistic license supporting popular fiction like the star trek and star wars universes.

Obviously my views are supported by confirmation bias, but in the only ecosystem we know of the hominid body plan is the most successful.

Things would be different in different environments, like higher gravity or ocean planets, but in the absence of any data about those the safe bet is that most intelligent life looks similar to us.