While I too would like to see wider availability of the TLM, this article seems to begin from a fallacious supposition all too common to Traditionalists. Namely, that if the Mass according to the 1962 Missal was still being offered on every altar in the world, in Latin, ad orientem, etc. that the Church would have no problems. This assumes that the Church exists in some type of hermetically sealed bubble. Sadly, this is not the case. The world does influence the Church, sometimes to her great detriment.
The cultural decline that accelerated in the late 60s would have infected the Church even if good Pope John had decided to do nothing more during his Pontificate than wander the Vatican gardens. Keep in mind also that all the priests who were liturgical “experimenters” or “innovators” and later grew up to be seminary professors, bishops and syndicated newspaper columnists were educated at seminaries in the 40s and 50s (the “good” old days). The putrid rot in our Church that came to the fore in the 60s and 70s was festering for decades just under the surface and, as we’ve seen in recent years, is still bearing its rancid fruit.
It’s highly unlikely that the TLM would’ve been able to stem that tide. We just would’ve seen clown Masses and such like said ad orientem and girl altar boys saying, “Ad Deum qui laetificat juventutem meam.”
I believe God gives us the priests and bishops we deserve, no matter what language the Mass is said in.