Sexually transmitted diseases at their basic root are a judgment from God in the way that all disease is a function of the decay the people who dwell on the earth experience as a general consequence of sin from the Fall.

Links mentioned in the podcast-

Is homosexuality worse than other sins?
For this reason, Christians are right to see homosexuality as an especially debase sin that displeases God. It is contrary to His good plan for marriage, and cannot reflect the purpose for which marriage exists—to represent Christ’s relationship to the church (Eph 5:31)

Is Homosexual Practice really No Worse than Any Other Sin?
“Christ’s universal coverage of sin through his death on the cross does not mean that all sins are equal in all respects but only that all sins are equal in one respect: They are all covered.”