Yes, but people are allowed to express a strong opinion on a complex subject without also specifically mentioning all the caveats and possible counter-arguments to their position.
By all means argue back and add the nuance you think is missing, but it's intellectually dishonest and lazy to just say "ah, but it's more complicated than that".
By all means argue back and add the nuance you think is missing, but it's intellectually dishonest and lazy to just say "ah, but it's more complicated than that".