[psnehanshu]

Movie data isn't that valuable information to protect for an individual. Instead you can try making a contacts syncing software, or email storage, or even WhatsApp media backup system.

[sankalpdomore]

It's not about privacy, but loosing my data from a 3rd party hack or attack.

I can always backup my own code (json file) locally vs. asking letterboxd or imdb to backup my data.

[psnehanshu]

Yes, but again, for most people, movie data is far less valuable than say contacts.