Agree with pretty much all of these posts. Sam Adams was a married, middle aged, pudgy, balding tax collector (and had been 9 years, not the 1 portrayed in the series) not the young, single, brooding guy who single handedly sparked the American Revolution that is portrayed in the show.
I get it though, I mean who wants to watch a show about this guy...
The poetic license quote above was generous. They pretty much rewrote the American revolution to make it a beer ad. Some of the choices were pretty curious. One of my favorite parts of the Lexington/Concord narrative is how after the British stomped the 'disorganized rabble' of the minutemen on the green, the colonials proceeded to pepper them with gun fire all the way back to Boston turning a clear British victory into devastating engagement. That's a pretty compelling storyline that they wrote out of the narrative.
That said, it was thoroughly watchable.