I wish science would come up with a better definition. Just like we no longer have Pluto as a planet (there were other definitions they considered with different results - the important thing is a useful definition)
That won’t happen, largely because continents are BS scientifically but useful colloquially and in geography. Politics also uses them too, but the usefulness of that I’ll leave as an exercise for others.
If you want science, you want plate tectonics and geography focused around the boundaries of plates and volcanic science. If you want to know what a continent is, whatever model you were taught in school is good enough for government work. The important thing is to know what that land over yonder is if you’re on a boat.
