Observing from the cheap seats here (and having dealt with homeowners like this, every community has them):
The solution for every homeowner who thinks the board isn't doing right by their community is to *step up, serve on the board themselves, and show the community how it's done*.
It's also a fact that Vocational Dissidents rarely, if ever, volunteer themselves.
Their goal isn't to make their communities better, regardless of what they say. It's to create conflict and controversy.
They get an emotional charge out of it. And they aren't harmless nuisances. They can make it impossible to elect a board at all since nobody wants to deal with their nonsense, at which point the community is facing
receivership. And the community will be very, very sorry if that happens.
If they do, in fact, want to make their communities better, then consider that their past efforts have been spectacularly ineffective. Yet they continue to repeat themselves over and over and over, while nothing changes. Do these sound like effective leaders to you? No, they do not. A competent leader would think "well, that's not working - why did it fail and how can I change my approach, given what I've just learned?"
That said, boards need to know how to deal with the Vocational Dissidents - clearly the current board isn't learning anything either.
Here is the trick every board member needs to know: you control the Dissidents' behavior by controlling your own. This applies particularly to how you communicate.
No long-winded speeches. Think Brief, Bland, Boring. Stick to HOA business, don't get derailed. They try to start an argument, ignore it completely. Communicate with the community in short bullet points with links to more info - because the average reader will give you about 3 minutes of their attention, so the essential facts have to be in headlines. Extended metaphors are fine for the literary crowd - I enjoy them myself - but that's not what's needed here. And for the love of all that's holy, stay off of social media - it's the Vocational Dissidents' paradise.
The board's goal is to allow Vocational Dissidents to discredit themselves, and they will do so. Be transparent and professional. You want to make liars out of the Dissidents in full view of the entire community but
without actually saying "they're liars". I strongly recommend education for the entire board, even the ones who are sure they know what they're doing. Many of the regular posters here, who have spent years serving on their communities' boards, will tell you that they're still learning new things. Being a competent board member is one tough gig.