Yes I remember there was something like that, but I was only referring to the rare case when somebody gets caught on the wrong foot by some completely unexpected event. But as I said, rules are rules and apart from the scenario you described where someone knows in advance, all other cases can't be handled as an exception as that would deteriorate the level playing field for everyone. Hence, the rules make sense and should stay in place as they are.
How the hell was Dimitrov able to beat Alcaraz? I checked the ATP ranking just now when I wrote this question and saw that he isn't that bad. I thought he crashed down all the way in the ranking in the last couple of years. Never heard that he won anything. But still around and good enough to eliminate Alcaraz.