I represent only myself and not some in the community, but I’d say two things:
1. Rav Aviner described Tzahal not as our common denominator but as “single largest common denominator we have.” Unfortunately, Am Yisrael is in such a condition that, measured in numbers, this is true.
2. Nowhere in the article, and nowhere at all to my knowledge, does Rav Aviner suggest that this is the situation he prefers. In fact, his decades-long record leaves no doubt that he regrets this strongly and considers Torah the true common denominator.