To understand the full context, exactly that which Father Sretenovic was objecting, here are Mr. G's words:

    In the human body the organs that are the most shameful are those that are used to discharge the filth produced by the body; they are the penis, the vagina and the anus. The last is more shameful than the first two because it discharges solid detritus, while the others discharge liquid detritus, but these organs also are disgusting and shameful. Now then, the male and female sɛҳuąƖ functions are put into practice by these shameful organs. Therefore, it is undeniable that they share something of the same disgusting character of their other function.

    The reproductive organs are among the filthiest of the human body
    Even though the function of reproduction is much nobler than the function of eliminating the impurities of the body, there is a universally accepted association of those functions and, consequently, a natural psychological repulsion to view these organs.

    The repugnance for the exposition of these organs – either when they are in action or not – is universal among civilized people. Even among primitive and pagan people these organs are normally covered by clothing. To reach the point of boldly exhibiting these organs in public, a person or a group needs to have reached a great degree of moral degradation by losing any reserve of pudor or shame.

    The fact that the sɛҳuąƖ organs trigger the process of concupiscence and as such become greatly attractive – either in marriage or outside of it – does not nullify the normal repulsion they raise. So then, reactions of both shame and attraction are present regarding these organs.

. . .  Therefore, we see that the sɛҳuąƖ organs are tainted with the shame proper to the function of eliminating human waste, which is another function they have parallel to that of procreation. Consequently, the marital act shares an analogous repulsion.

https://www.traditioninaction.org/religious/c048-Single_8.html