I think this is a reasonable representation, though.

The idea behind voting is to say "I think this way is the best way", right?

So if Thiel is saying "that way was not the best way", then presumably if the issue came to a vote today, he would vote against.

It's true that he's not advocating for turning back the clock, but I think it's fair to say he wants to turn back the clock, in that he has expressed his opinion that he would prefer to live in a world where it were so.