Tweets come with a lot more data than that.
Tweet object model: https://developer.twitter.com/en/docs/twitter-api/data-dicti...
Example payloads: https://developer.twitter.com/en/docs/twitter-api/data-dicti...
500 million times 1KB is... still one USB stick, not even $50 https://amazon.com/SanDisk-512GB-Ultra-Flash-Drive/dp/B083ZL...
Or going by the retweeted quote tweet that's 40% bigger zipped, it's still well within 1TB which is a normal size for a flash drive.
I'm not very fond of Musk but this is a weak criticism.
That's like saying it's easy to check if a picture shows a bird because it's only 100kB.
I’m boggled by the extent to which people mind-read Musk through his tweets. To me it’s obvious that his Twitter is an outlet for stress busting and banter, like smoke breaks.