When we think that alien civilizations see our microwaves and other signals, there is a possibility that they see us. But making contact with other civilizations is a complicated thing. The aliens have similar problems with us as we have with hypothetical alien civilizations. If aliens want to see what our messages, like TV data, involve, they must break our codes the same way we should break their codes. We are aliens for aliens. That means their numerical systems might be different than ours. And they must also detect our signals and recognize them as the products of intelligent creatures. But if aliens sent some kind of voyager to detect intelligent lifeforms from other stars, they might send robots for the first journey. If hypothetical space colonists are traveling to another solar system, Those aliens might send the robots to make the base before the human colonists. The purpose of those robots is to make comfortable and good bases for colonists. Sometimes there is the idea that ...
For finding solutions for problems, we must not claim that some proposition is right or wrong. All possibilities are open. Until they are proven right or wrong using empiric methods that are scientifically accepted.