Not at all, it's mostly due to how easy it is to fake now. There are still lots of sightings, especially of UFOs but very rarely do they go "viral". And the vast majority are pretty easily explained which happens a ton with both new and old ones. But then there are others where all we can do is go "huh, that's weird".
I'm far from a conspiracist but there are things that are just so odd that it's hard to explain. Doesn't mean it's aliens though, obviously. And as we can't just go back in time to discover what it was there's nothing to do about it.