They find a handful of supposed 'deathbed conversions' that they can't provide verification of and it's very validating for them. Perhaps because over the last 7 years, the USA added about 18-1900 new atheists a day, while Christians dropped by about 7,500 a day over the same period. They need to count every win they can get, even if they have to make them up.
I'm not anti-Christian. I'm anti-stupid.