“defend the practice of allowing synagogue members to drive to synagogue on Yom Kippur and Shabbos without reproach.”
That doesn’t mean those posters hold that it’s mutar to drive on Yom Kippur. Counting them in a minyan is another discussion. Other than that, what kind of “reproach” is there? Are you just referring to the people peddling the kiruv-friendly, PC mantra of “it’s so beautiful that they’re actually doing something for Yom Kippur; even though they drove it’s such a big mitzvah; wow look at the big mitzvah boy, etc?” If so, yes, I agree that needs to stop and I’m insanely sick of it too. It’s like saying when they worshiped idols in the Beis HaMikdash that “at least it got Jews to show up, and I think that’s beautiful.”