This is different though. What you are talking about would be if we treated ignorance as scientifically viable, which we don’t.
This is all about monophyly and its lack of applicability to common language.
We still use the words dinosaurs and birds though, even though birds are dinosaurs.
Extending, we still use the word ‘reptile’ even though the term ‘non-avian reptile’ is necessary to distinguish birds from reptiles.
We still use the word fish in distinction from other vertebrate groups, even though we are all technically nested within the fish.
We still distinguish snakes from lizards, even though snakes are technically one giant radiation of legless lizards.
These are problems that are basically unsolvable, because they come from different origins of ‘knowledge’ - scientific and common.
The mamba problem is caused by idiots.