The ashtray is actually mandatory even in new planes per FAA rules.
Modern aircraft still have ashtrays in the washrooms because they’d much prefer that somebody choosing to sneak a smoke puts their cigarette somewhere other than the washroom trash bin where there’s a history of them starting fires.
Modern aircraft still have ashtrays in the washrooms because they’d much prefer that somebody choosing to sneak a smoke puts their cigarette somewhere other than the washroom trash bin where there’s a history of them starting fires.