I dont know why anyone with any commonsense still uses Facebook, Instagram or Twitter. They're completely uncontrolled nonsense that I wouldn't trust with my email address. Let alone my phone number. Call me crazy or socially inept, but I value privacy.
Facebook and Instagram feel different to me just because people tend to use them in more personal ways. But, again, if you plan to make the data public anywhere it can always be gobbled up by spiders and three-letter agencies.