Kind of a silly comparison. Much of kratom's popularity came about because the alternative is illegal not because of how safe it is or isn't. You can't compare fluoride to unsafe levels of lead. And "cessation of tea ingestion" won't give you literal opiate withdrawals.

Calling it a safe way to do opiates is just irresponsible. It's really not that different from how manufacturers more than a century ago invented opioids and called them non addictive alternatives to morphine.