Normally I would think about how a kid would be picked on and beat up all the time at school with a name like Spurgeon. However Spurgeon Seewald won't ever go to a school with other kids besides his future siblings and maybe some cousins. 

Two snarky observations, one their kid's initials are S.S..... do you think they considered the ugly historical associations? I think it is a fair question to ask as his cousin's first name is Israel. 

Secondly, although he is a cute little guy, first thing I thought was, "Oh great, Jim Bob mini-me 2.0."

well it is ses firstly and secondly, there are lots of companies that have SS as inititals..

At least when he's older, he can call himself S. Elliott Seewald.

I thought the name was a joke and that spurgeon meant something else. So I googled it and according to Urban Dictionary:

spurgeon
A beer guzzlin, bacon frying, big dick swingin bad ass motherfucker. Someone you really want to have on your side when shit hits the fan. Someone you'd let nail your old lady just for the story. A man that makes Chuck Norris tremble just hearing his name. Someone that seeps testosterone out of every pore of his body. Spurgeon, the man of all men.

Uh, so yeah 

It's like she thought, "OK, Jill gave her kid a name that threw lots of ??? in the air, how can I do even better?

I guess it's a good thing that little Moody Spurgeon is destined for life on the compound, because public school kids would rip him to shreds with a name like that.

WRT the initials, probably not. I have S.S. initials and have never had it brought up, so it almost certainly never crossed their minds.

Still don't see it as an issue.  No one thinks of Susan Sarandon or Sally Struthers and makes the leap to Nazi Germany.

Or Steven Spielberg, Sarah Silverman (not that they'd watch any of her stuff), etc.