No, or maybe not yet. We're heading into colder weather - which tended to weed out all but the die-hard fans anyway. Also, as teams get eliminated from playoff possibilities "fair weather" fans tended to drift away anyway.
Well, they've already stripped down to just the die-hard fans already. So they probably don't expect things to get much worse. In fact, they're probably counting on playoff games to pack in more attendance and better TV audiences -- we'll see about that.
They've thrown a couple of appeasement attempts and a few million dollars at the issue. Yes I know, wrong approach but they are too {expletive} stupid to realize that -- yet. I'll bet you they have their left-leaning ad-men, oh, pardon me, ad-women, no, er... ad-non-gender-specific-nor-assuming-pronoun wankers and PR types working on plans for next season right now.
No-doubt the limp-wristed crowd is telling the owners how wonderful this opportunity is to expand their customer base beyond their historical demographic. They'll be planning all kinds of promotions and tie-ins to re-brand the NFL and make their fans feel good about being fans...
The upshot is, even if the anthem protests and blatant ingratitude and disrespect didn't turn you off from the NFL this year - what they're probably planning on doing to it next year definitely will...if you're part of their traditional fan demographic. They apparently think they don't need us.