The LDS are not converting people inside Temples.
One could stand on the rooftops and shout that, but the very next thing out of these guys mouths would be "stop converting dead Jews".
First we never started converting dead Jews.
I remember going to a really cool Jewish friend's house. They had me over for dinner and taught me all about Jewish stuff and some Yiddish words and all that.
Anyway they actually prayed for me while I was there! I thought it was awesome. They prayed that I would have the faith to do what God wanted me to do and that I would be a good boy and all that stuff.
Really and truly baptism for the dead shouldn't be construed as any more than that.
In LDS theology no one can be saved in ignorance. In other words in order to be 'saved' one has to know God and who He is and what he want from us.
After every one of us is dead and gone, Mormons believe we will ALL get a crash course in who God really is. That includes Mormons too.
What baptism IS, is a covenant to follow God. God has set those terms. Because it is a Christian religion baptism is the mode by which one makes THE covenant one needs with God to proceed after we're all dead and gone. EVERYONE has a fair shot a learning and accepting. It is not forced upon anyone. Thats where the folly lies in the criticism.