Is the definition for UFOs/UAP limited to the definition given by the US government or why is every update from Mexico and Peruvian UFO Disclosure considered off-topic?

Every single post that is regarding Latin American UFO Disclosure this includes:

Mexico declassifying UAP Sightings. American media interviewing first hand researchers in Peruvian effort. Peruvian UFO Hearing which will discuss Non-human biologics. Non-human biologics being studied by multiple universities. American university visiting Peru this week to gather samples. Announcement of a new species discovered. Live Stream of a new non-human corpse discovered.

Yet the US informing their citizens about a Russian Weapon System is allowed to be discussed on here. Is the fault of Mexico and Peru effort that they are actually presenting evidence?