[WoofDog123]

“Not too compatible with life in anything resembling humanoid form.”

What does humanoid form have to do with extraterrestrial life?

[FreedomOfExpression]

What does humanoid form have to do with extraterrestrial life?

Are you saying that any extraterrestrial life would definitely not be in humanoid form?

Perhaps I was too limited in my terminology.
How about "not compatible with most physical forms that would be capable of building a spacecraft that appears to be solid, and piloting it to another solar system"?