Well, I don't know. But whatever point that is, we're not at it. It's always something that needs to be contrasted with the only true alternative. At what point would I consider Trump to be worse for the country than Hillary would've been? No point we've gotten to 9 months into it, that's for sure.
His bluster will come and go without much in the way of meaningful impact. The policies we're left with (or would've been left with, had the election gone the other way) will endure with profound impact.
And Lowry's right -- if you look past the sideshow stuff and just focus on the meaningful output, there are a number of things that anybody of a conservative persuasion should be pleased with. What's more, most of the places where the ball hasn't moved can actually be laid at the feet of Congress (and, specifically, the Senate), not at the feet of POTUS.
Perhaps Bob Corker needs to redirect his ire. Even Sen. Graham seems to have figured this out. Where the ball has been dropped thus far, it's been dropped in their court.
Corker is rightly concerned about Trump destroying and dismantling world alliances, as chairman of FRC. That's likely to be the area where Trump creates the most long term damage. TPP, Iran, Paris, Korea trade, etc...