I hope not, because i have heard all the it can't be done comments before but i am 51 and even though i know it is a huge uphill climb i intend to break the 2200 barrier before i die
I'm 56 and I confidently expect to break 2200 (online) within a year.
I speak from experience when I say that 2200 online here is A class (1800-2000) USCF OTB.
I'm only about to break 2000 online here and I performed at 1944 in a recent tournament. (I have no established rating yet)
I would say you could become an NM if you studied hard.