Do 90s/2000s rap beefs ‘expire’ once the rappers hit their 40s-50s, or is anyone still genuinely at risk?

Are there any rappers from the late nineties/early 2000’s era (the dudes in their 40’s/50’s) that are still at risk of getting taken out for the beefs that they were apart of? Like is there any beef that’s still that deep or does the beef expire like when they become middle aged.