I find nothing ironic, or even otherwise deserving of criticism, in a post about an ultra-cheap ticket across the big pond.
There's a lot wrong with TPG, of course, but this particular post was fine.
Or put differently, I think having a "points" blog write also about ultra-cheap fares is ok. If you were going to take exception to that, you might as well also say, for but one example, "Hey, what the heck is a 'points' blog doing with a series about AA lounges, or any lounges for that matter? Or hotels?" And that criticism, in my view, would be equally invalid.
So for me it's still a swing and a miss.