However I remember the words they used to end with, and I just went and checked a relatively modern movie - Top Gun: Maverick if you want to know - and you know what, the words are still there, right before the credits stop:
Ra-ra-Rasputin, lover of the Russian queen, was murdered in 1916 by Prince Felix Yusupov using cyanide cakes and then being shot.
An MGM researcher had pointed out this factual discrepancy to the studio during production and warned that the Yusupovs could sue; the studio fired her.
A justice in the case told MGM that the studio might have stood a better chance had they incorporated a disclaimer stating the exact opposite: that the film was not intended as an accurate portrayal of real people or events.
I find it baffling that including this statement like a magic spell at the end of every movie for a century is any kind of effective legal shield against anything – but I guess, who wants to be the lawyer who says Yeah you can get rid of that.
Speaking of magical legal disclaimers, I had a moment earlier this year complaining about automated tannoy announcements in train stations.