Isn't the 'purity' of Latin due more to the fact that we just don't have much data on the languages that informed it? I'm sure Latin borrowed heaps of words and

Isn't the 'purity' of Latin due more to the fact that we just don't have much data on the languages that informed it? I'm sure Latin borrowed heaps of words and grammar from other languages, but those languages are mostly lost to history now, since the people who spoke them didn't conquer and hold the Mediterranean for one thousand years.