I've noticed the "less" vs "fewer" issue a lot more in the last few years. I feel like we're losing that battle. I will continue to (kindly!) remind people of the difference, though. I can't help it.
Language is driven by users with skin in the game, not nitpickers with dictionaries. Word use and meaning will shift naturally over time. If I say less and, given the context, you understand it to mean few, then the mission was accomplished, the mission being communication. That you understood me is an example of word use/meaning shift in action. It happens.
And indeed, the writers of those dictionaries would be against the prescriptivist nitpicking, too.
[1] e.g. https://english.stackexchange.com/questions/495/less-vs-fewe...
It's also okay to have opinions about language of course. I just often see people confidently stating, that they're speak the right way, and those others (from that other city, country, those young people, those poor people, those black people, etc.) speak the wrong way. And it often boils down to either ignorance about how languages actual work and evolve, or just elitism/classism (or worse).
And as somebody who cares a lot about languages, this just rubs me the wrong way, and I see it so often. Hence my previous response, pardon the snark:)
As Shakespeare showed, when you're a playwright, you can change the language.