Isn’t there a difference, even in encyclicals, with the Pope offering an opinion regarding one of many options, and with the Pope setting forth a definitive teaching?
Not every word in every encyclical is an infallible teaching.
Further, in something like oh say Laudatio Si, when the Pope offers his opinions regarding things like air conditioning, there are both graded responses. For some people in some areas, the use of air conditioning is absolutely essential to them and the goods they are preparing; it is a question not of ‘comfort’ but of necessity. For others, air conditioning is so rarely needed that it isn’t even a requirement. It is a real luxury there.
And then there are all the little things in between; the people who ‘could’ eschew A/C for themselves, but whose small children or elderly parents have a need, particularly during heat events. The people who look perfectly healthy but have underlying health conditions which A/C can help keep from worsening. Etc. Etc.
I don’t think HSD is a Cafeteria Catholic for choosing to hold a differing opinion—opinion, mind you—regarding one opinion in a sentence by a Pope. Anymore than somebody might choose to hold a differing opinion regarding whether, say, it was prudent for Pope St. John Paul II to kiss the Koran. The action is over and done with; the intentions I think were honorable, but I also think taking the long view they were mistaken. But that does not mean I think that the Pope was sinful! People can disagree even with Papal opinions and not be sinful or ‘Cafeteria’ Catholics.