Does Mark Twain's quote still hold water for not having term-limited, full-time legislature?

Michigan's legislature is term-limited and has reached a point where senior members are the ones who have served one term. The consequences for our troubled state seem to be a steady movement towards it being ungovernable.

The quote has been taken out of the "quote closet" more than once, but this time its fromDavid J. Morris, CEO of Dillanos Coffee who shared it on his Twitter feed.
The quote is at the bottom of this screen capture from my Tweetdeck.
Disclosure: I am a retired employee of a state legislature and I've observed its operations from a variety positions, including a stint as a newspaper reporter at the state capitol.
Right now, I'm looking at it as just a taxpayer trying to live life.