Would extraterrestrials really try to contact us? A few thoughts on the WOW Signal possibly debunked

With the WOW Signal possibly debunked, this leads us to a few questions.
The most important question is: Was it aliens? The narrowband radio signal – the ‘Wow Signal’ – that reached Big Ear telescope of the Ohio State University in 1977, was so strong that astronomer Jerry R. Ehman commented “Wow!” at the side of the printout of the measure. The signal had been received during a search for extraterrestrial intelligence project. Therefore it was reasonable that scientists thought that it might have been an attempt by extraterrestrials to contact us.

Now, the signal seems to have been finally decrypted, and scientists said that it had transpired to be no message from extraterrestrials after all. Instead, scientists were cited to have discovered that that the signal most likely was caused by a comet.

But this leads us to the question: Would aliens really contact us using radio bursts or radio signals? And would they accept that leakage of their technology could cause them being discovered by another civilisation?

Could other civilisations discover us humans because of our technology leakage? Well, yes, they could. The question is, do we want that?

I imagine that other species possibly would tell us, ‘Hey, are you mad? Do you know what kind of civilizations there are out there in the universe? Do you really want to lure them to the earth?’ If we imagine species like Giger’s aliens (you know, the ones from the Alien movies), I guess we really do not want to lure them here.

Stephen Hawking even warned that we ought not try to get the attention of other civilisations, because there could be evil civilisations, that could try to conquer the earth. We know that this is not so far-fetched, because we know that this is possible; we only have to look at earth’s history. When the Spanish discovered America, they conquered the continent and subdued the native people there. An alien species, especially a species that is very developed, could do the same to us. We know the way the native people in America were subdued; we do not want to find out what a civilisation, hundreds of thousands of years older than the humans, and way more advanced than the humans, could do to us if they’d attack and conquer our planet!
What if an extraterrestrial civilisation might think exactly like this? What if they are afraid of being discovered and subdued by an evil alien species? They would use some kind of contraption to avoid leakage of their technology. And then we cannot be sure that an extraterrestrial civilisation would use exactly the same technology. It could be possible that they do not use radio signals. Imagine a civilisation communicating using quantum communication. There wouldn’t be any leakage for us to examine, and maybe, there could be an alien civilisation near us and we wouldn’t notice. All we could examine would be the way the atmosphere is built up and whether the planet is in the Goldilock’s zone, and therefore could support life, or not.

If a species would attack this planet, they would not expect a developed civilisation, so the extraterrestrials there could use this as advantage. If they’d attack the earth, on the other hand, they’d know quite a lot about us, as we have sent years of tv programs, radio and other signals out into space. We might want to consider if we really want to have other civilizations know about the earth, or if we want to listen to Stephen Hawking and not try to lure alien conquerors near the earth.
What we can be sure, I guess, is that either way, if the extraterrestrials know about us and want to contact us, they will contact us.