I don't know anything else about this guy or his causes, but governments have no business writing anti-sodomy laws. In this case, the Supreme Court was right to overturn a patently unconstitutional law.
A states' police power allows them to write laws concerning the health and safety of its citizens. This is not a federal issue.
How about laws against prostitution and consensual "incest" between parties over 18 (including adopted, non-blood relation siblings)?
The activist supreme court did NOT legalize all sexual acts between consenting adults in private.
Even dildos are still illegal in Texas (and posession of 5 or 6 of them is listed as "intent to sell").