Travolta family tragedy

Googling for background on John Travolta's 16-year-old son who died while the family vacationed in the Bahamas, I found this blogpost from May, 1970. Keep in mind, you can't believe everything you read on the Internet and the source may be questionable:

Hollywood, Interrupted is reporting they had an interview with a Florida man named Tim Kenny who lives and works in John Travolta's neighborhood and has intimate knowledge of the goings on behind the gates of the Travolta airporthome. Kenny is concerned that Scientologists, John Travolta and Kelly Preston, are ignoring their son Jett's reported case of autism so much so that Child Protective Services should be encouraged to get involved.

I don't think it's a stretch to call their treatment of Jett child abuse," Ocala, Florida restaurant manager Tim Kenny tells Hollywood, Interrupted. Kenny claims he met Travolta at his restaurant in February, and, after "comping" the movie star and his daughter a meal per restaurant policy for celebrities, he asked him, "as one autistic child's father to another," if he "was doing anything special in terms of therapy" for Jett. Aghast, Travolta responded, "Well, we involve him in the arts." Then, he offered to send Kenny a book, and high-tailed it out of the restaurant.
"If I ever received a Scientology book from him [Travolta], I'd find him, and throw it back at him," says Kenny. "Scientology is keeping him from acknowledging his son's autism. They see it as a weakness. That's what the space aliens are telling him I guess."

Repeated requests for John and Kelly to take part in a local charity event connected to autism advocacy were ignored. Furthermore, Hollywood, Interrupted reports,

The Kennys also claim that Kelly and John "let Jett sit in front of video games all day eating junk food, while they eat the best organic food money can buy. They exclude Jett from all social events because they are embarrassed."
"Once," reports Kenny, "when Kelly took him to the movies, Jett started to have a meltdown and Kelly pointed at the nanny and ordered, 'Take care of it.'"
"Jett does not speak at all," confirms Kenny. "He has not even been taught how to communicate. We struggle every week to pay for our daughter's therapy. How dare he [Travolta] ruin his own son's chances of recovering! We want to get the word out on this."