First, this is absolutely about sola scriptura since both father and son are using it. Read the article again. Both cite the Bible as the inspiration for, or justification of, their beliefs.
Second, whether or not you view it as a "Roman Catholic" swipe is irrelevant to the point.
Third, pointing out the problems of sola scriptura is not encouraging "dissension" againt orthodox Biblical stands precisely because sola scriptura is found no where in scripture. There are hundreds of verse that prove scripture is inspired, instructive, useful, inerrant, etc. There is not a single verse that shows there was ever a belief in sola scriptura in Biblical times.
Fourth, my Church is indeed troubled by the presence of homosexuals in the priesthood. They have wrecked havoc on the Church and damaged souls. I am, however, not afraid to go down that road of discussion because it has nothing to do with what I have noted, in no way proves sola scriptura, and does nothing but make you look bad by grasping on to it as a straw man. There are Protestant groups that claim sola scriptura (at least officially) and yet are well entrenched in the pre-homosexual camp. My Church is not pro-homosexual, no matter how many homosexuals may be in it, is not Protestant, and does not use sola scriptura.
Fifth, if a father and son, using the same Bible, and many of the same beliefs, can't agree on basic issues, while apparently still relying on sola scriptura, then what is the practical use of sola scriptura?
Sixth, I made a simple point that no one else apparently saw. You may cast this as an orthodox versus heterodox view of the Bible and what it teaches (on homosexuality in this case). I think that is perfectly appropriate. I also think, however, that that argument fits under a larger heading of "Practical Problems of Sola Scriptura". Two men, whether father or son or complete strangers, armed with the Bible, believing in sola scriptura, coming to blows in regard to beliefs --- and with no apparent way of resolving their differences. Where to from here?