No clue why. Maybe just the usual "amp up the scare factor" BS so prominent in the media. "SCARY KILLER WORKED AT YOUR LOCAL SCHOOL!!!" Bugga-bugga. Even though, as you say, his job didn't obviously have anything to do with the murders.
Now speaking of the Prosperity Gospel - how the mighty art fallen! Back in the 1980's, Jim Bakker was a multi-millionaire with his own TV satellite empire, an air-conditioned doghouse and a nauseatingly perky raccoon-faced wife. And Heritage USA, for a while the third most popular tourist attraction in the USA (after Disneyland and -World).
These days, Bakker is reduced to hawking overpriced "survival kits" on his web site. Because Jesus Is Coming Back Soon and you'll need this stuff to get thru the Tribulation. See below.
Long as I'm here - I gotta say, Jim Bakker must be one of the worst judges of character in the world:
--His friend and fellow pastor in Florida introduced him to Jessica Hahn, to make Tammy Faye jealous. That sure backfired. Hahn blackmailed his church into a $1 million payout. The American public may not have really understood his troubles with the Feds over timeshare sales. But they certainly understood "canoodling with church secretary and trying to keep it quiet."
--Bakker's really good friend Jerry Falwell offered to "temporarily" be the caretaker of Bakker's satellite empire. Only during Jim's "time of trouble." Soon as the ink was dry on that contract, Falwell tossed Bakker under the bus, publicly denounced him and took over complete control of Bakker's network. Falwell had been wanting to do that for years, so it's amazing Bakker fell for that one.
--When he went to prison, Bakker turned to his best friend Roe Messner. Asked him to watch over Tammy Faye. Messner certainly succeeded at that. While Bakker was in prison, Tammy Faye divorced him. And married Messner. (Messner later went to Federal prison himself, for bankruptcy fraud.)
Disgraced televangelist Jim Bakker was sentenced to prison for using his followers' faith to sell them goods of dubious value, so it's odd that now that he's free he's using warnings about the coming End Times to sell fans thousands of dollars of survival gear.
Bakker built a Pentecostal empire in the 1980s before he was convicted of fraud for asking his followers to donate lots of money to become "lifetime members" of his organization, a deal that came with a vacation packages that could never be redeemed.
With that history, you'd think he'd want to be very careful about how he makes his money now. On his website, Bakker sells all kinds of things, from jewelry to books to DVDs to, as Talking Points Memo's Nick R. Martin noticed, "Survival Items to tide you through the End Times when apparently all supplies will be packaged in buckets, like his "Bakkers Dozen Emergency Fuel Buckets" for $800.
http://www.thewire.com/national/2012/05/jim-bakkers-doomsday-survival-gear-way-overpriced/52499/