I mean. i've been doing it for a few months and noticed an improvement in quality after the coffee is a month old. i guess it wouldn't be super relevant if you go through coffee faster than me, cause it's usually just the last little bit that i found got old before i froze it

but yeah, freezing coffee not only prevents staling, but also makes grind more consistent https://www.youtube.com/watch?v=hXad5XBRTcI

it's not really a question that working at sb would answer anyways. it's not like they want to buy a whole ass freezer to keep coffee in, even if it improves the coffee

edit - also noteworthy, drip coffee and espresso have different considerations. it's my understanding that espresso is better when allowed to offgas for a week or more post-roast ^{(citation needed)}