No excuse, none? Not even the harried passengers at the terminal suddenly being told they need to check their carry-ons due to lack of overhead bin space, right before they're about to board?
You have never forgotten to pack something, or perhaps forgotten an important detail in a stressful situation?
I had an international flight every month on average in 2022, across Europe, and I was never explicitly informed about this by airline or any of the friends and coworkers.
This has been procedure for the last 40 years.
There is no excuse that is feasable or plausible for 'forgetting' important medications in the checked baggage.
This is a reading comprehension problem and not an airline issue.