FB doesn't sell the data, they sell the ability for advertisers to advertise to groups. I'm not a fan of ad-driven models, but this is a lot different than sell

FB doesn't sell the data, they sell the ability for advertisers to advertise to groups. I'm not a fan of ad-driven models, but this is a lot different than selling data. If you're using unencrypted messaging you should assume it's public. This is true of FB messenger and Telegram, but if I had to bet on what unencrypted content is more likely to be owned I'd bet on Telegram. This is mostly a bet on where the world's best security people are and the company culture. Really though we shouldn't be relying on the benevolence of any of these company leaders, that's why people should use Signal or WhatsApp where the encryption means you don't have to (or Urbit where there is no central leader).