Yeah, but the alternatives are someone has learned to travel faster than light speed or all these sightings are disinfo or foreign tech. I don't think it's foreign tech - if it was China, they'd have invaded Taiwan and if it was Russia, they wouldn't have spent so much time fucking around in Ukraine. I don't discount disinfo, but if it is truly "something else", I think an advanced civilization hiding somewhere nearby (including in the oceans) is more likely than one that has mastered transversing the galaxy. All the limitations we think exist are all viewed through the lens of our existing technology/understandings, which may not apply to a civilization with a head start. Think about how far we've come in just a short period of time. We went from the Wright brothers to walking on the moon in approximately 70 years, a blink of an eye.