Yup, generally takes the better part of a year to update an existing vaccine - which is why the usual flu vaccine generally is nowhere near as effective as folks would assume. The virus has plenty of time to mutate before the next flu season. So it is a crapshoot as to whether the flu vaccine will be the least bit effective. As a matter of fact, in a friend's family, two of the three got the flu shot, but all of them ended up getting the flu! A small sample size, but it shows you that it can happen.
Anyway, wouldn't pay too much attention to talking heads on radio, any more than I would pay attention to them on TV.
I once received an award from my employer for going 5 full years without an absence. I was going for 6 years, but then the company offered free flu shots, so I got one. Shortly after, I was out for a full week. Yes, I got the flu.
Learned my lesson. Never got another flu shot, and in the 30 years since, I've been healthy with only an occasional bout with the sniffles.