I do disagree with your opinion on people making excuses. I don’t deny that the Church teaches that it is grave matter; it says so black-on-white in the CCC.
Sometimes I do wonder though, if the Church’s teaching that moral declarations cannot be “undone” didn’t box her in, so that she felt necessary to later qualify the degree of culpability with such a wide range of mitigating factors after realizing that it’s practically such a universal sin that it is unrealistic to expect 100% compliance with many if not most individuals. This issue is one that probably every human wrestles with; it’s a natural part of discovering one’s sexuality, if left to our own instincts everyone will experiment with it.
ISTM it would have been better to simply say that it can be a disordered and selfish act in some circumstances, in particular if it denies the spouse his or her marital rights,or if it is reinforced by pornography. As it is the CCC’s mitigation of culpability would appear to cut considerable slack, so perhaps the effect is the same. I stress though that this is only my opinion and I continue to maintain that the issue should be taken seriously, and taken to the confessional where it is best dealt with. And if it is a struggle or a habitual issue, it would help to work with a regular confessor who can provide counsel at the same time.
For those who don’t face this temptation or can easily overcome it, as was said I think they should be thankful, and should be more charitable for those of us for whom it is a real struggle. None of us here, as far as I can gather, are anywhere near sainthood and if this isn’t an issue for some folks, I’m sure they have their own sins to deal with. We are all on a road to conversion, but not everyone is at the same milepost, and some take wrong turns and need time to figure out that they’re on the wrong road and need to make a u-turn. The Rule of St. Benedict that inspires me makes clear that it is a road to conversion for seekers, not a refuge for those who have already arrived.