"The neutrality of this article is disputed. Relevant discussion may be found on the talk page. Please do not remove this message until conditions to do so are met. (November 2022)"

"Thousands of emails purportedly from the laptop computer of Hunter Biden, President Joe Biden's son, are authentic communications that can be verified through cryptographic signatures from Google and other technology companies, say two security experts who examined the data at the request of The Washington Post." (WaPo, 3/30/22) [7]

"Those emails were obtained by The New York Times from a cache of files that appears to have come from a laptop abandoned by Mr. Biden in a Delaware repair shop. The email and others in the cache were authenticated by people familiar with them and with the investigation." (NYT, 3/16/22)[5]

"On the political flip-side, House intelligence committee chair Adam Schiff said the laptop was a “smear” from Russian intelligence, and 50 former intelligence officials said it was probably Russian disinformation. Now, however, almost no one disputes its authenticity."(Guardian, 2/27/22)[4]

Furthermore they can tell which files are legitimate and which are not. Its the 22,000 confirmed emails and files people are concerned about, not the unauthenticated ones. There is plenty of incriminating materials amongst the verified documents

"The analysis found that people other than Biden had written files and folders to the drive before and after the original report by the New York Post, but only after it had been taken into FBI custody. It also found that data had been accessed and copied off the drive by people other than Biden over nearly three years."