As a craft beer home brewer I can tell you that is not the case. Beer will usually start to break down within 3-4 months of storage. Higher ABV beers will be ok a bit longer but will still go bad eventually.
Unless of course you like bad tasting beer. Then all bets are off!
People drink Bud Light. Some with that fake lime stuff. Bad beer is alive and well!
I didn’t mean forever :^D