The term “cheers” is something that you pick up with the European base. A lot of Americans who spend years in Germany or the UK....end up using the expression a good bit. I used to work with a guy in my office who made twenty phone calls a day....and typically ended the call with “cheers” every single time.
I noted the kid played soccer a lot...so I’m guessing he picked up various European terms while hanging around the field.
I’m certain Laz’s “Cheers” would be better received in the intermountain west than answering the phone with “moshi moshi” after spending some time in Japan.
I spent a year working in the UK in the late eighties, and picked up a lot of British slang. After I came home in 1990, it took years and years for me to lose the habit of using those words.
I still pop out with the occasional ‘crikey’.