No, we absolutely do not have more evidence for aliens than electrons and anyone who thinks otherwise has a weak grasp of science.
Sure we do:
We have pictures of a wide variety of alien vehicles operating in our air space. We do NOT have pictures of an electron.
We have civilian pilots, military pilots, sailors, police, and even scientists that have seen alien vehicles operating in our air space. No human being has ever seen an electron.
We have multiple ground and air RADAR platforms that have tracked individual alien vehicles operating in our air space. We have yet to develop the ability to identify or track a single electron, and we don't even really know how big, or small, they are.
If one were to use the same standards of evidence that science uses to justify the existence of the electron, then the proof would, indeed, be overwhelmingly in support of alien visitation. However, there are a lot of people that find the entire concept of alien visitation to be "unreasonable" for a variety of reasons, and will therefore continue to find excuses to ignore the volumes of evidence that exists already to support the fact that we are, have, and will continue to be visited by alien civilizations.
The REAL question we should be trying to find the answer to is why aren't the fuckers introducing themselves? While we all have our suspicions, I think it's pretty important to figure out why the hell they're being so "stand-offish", so we can unfuck ourselves and maybe they can hook us up with some kind of energy tech that doesn't destroy the air we breathe, the water we drink, or fuck up the environment in some way.