Hi, thank you for the harsh comment.
We made it works, and thanks to your feedback we will make it great!
Our vision is as following: In the future, Google and Microsoft will be replaced by a federation of Bloom instances. boom.sh being one of them.
98% of the users don't have the technical knowledge/the time/the will to build, host and secure their own instance, and that's how we (and other instance providers) will make money.
You are right, AWS hosting is short-sighted, but it's because I've some credits, and easier to setup.
Privacy being one of our cor value, end to end encryption is on the roadmap.