Is it true: Area 51 and Extraterrestrial Technology?

There's no solid evidence for it.

Area 51 is a confirmed classified military test facility, and the government denied its existence for decades (suspicious but explained by military secrecy). No authenticated physical evidence, official record or independent scientific review made public to date shows extraterrestrial craft or beings there. David Grusch's 2023 congressional testimony about a crash-retrieval program rested on what he said he had been told, and his prepared statement did not mention Area 51. The Pentagon's AARO found no empirical evidence for claims that the US government has reverse-engineered extraterrestrial technology. Classified programs cannot be audited from outside, so the claim is unproven rather than disproven.