Old Life may not be every Protestant’s pint of IPA. But at least critics can’t fault Old Lifers for attributing the worst to non-Old Life Protestants (sorry if that sounds like the Pharisee’s prayer). Consider:
ad hominem is a problem, but if you watch cable news, or follow Twitter, or reflect on the way that Donald Trump engages with Democrats, or Democrats with other Republicans, you notice a style of argument every bit as pernicious. It consists of constantly elevating the very worst of the other side, attacking only the weakest rather than the strongest part or version of the ideas held by the other political party or ideological tribe or cultural identity group. As Scott Alexander puts it, “The straw man is a terrible argument nobody really holds, which was only invented so your side had something easy to defeat. The weak man is a terrible argument that only a few unrepresentative people hold, which was only brought to prominence so your side had something easy to defeat.”
To call a Presbyterian like Tim Keller an evangelical is not ad hominem. No either-or here. Old Life recognizes many shades of Christian. The question is whether Presbyterians really want to be Reformed or whether they simply want a better grade of Protestantism than Baptist or Christian & Missionary Alliance.