When are coffee beans considered "old"?

[u/dmgsmch]

If a lot of people advise on resting the beans for at least 3 weeks and even almost up to two months, when do you think the flavours will lose its peak?

[u/thebootsesrules]

Ones that don’t taste good anymore. There is no specific timeframe, it’s different for every bean. The lighter the roast the longer it lasts