Putting pressure on people not to divorce isn't quite the same as trying to get the *divorced* back together though - the claim was that *divorced* people and gay people were similarly discriminated against by the churches, which is different from those considering divorce.

And I think this part of your quote:

although certainly not with the same fervour that they oppose gay marriage

...is the most important part - there's absolutely no equivalence between the way they treat divorcees and the way they outright persecute LGBT people - they're on completely different scales.