It is against the law to claim to be a medical doctor if you are not so your claim is false. I have seen at least 4 medical doctors on Youtube giving good advice. Fruit should be eaten in moderation like all things. Over eating is a bigger problem than what you eat.
If you want good diet advice look at what the real experts eat ie elite sportsmen. Most doctors would not know much about a good diet at all because they don't do much training in it.