This is just a static marketing site for a desktop app. They don’t even have a discussion forum — feedback is handled by GitHub issues. Bragging about how simple their deployment is for a static marketing site and how it’s able to handle a static file being downloaded millions of times a day is super weird. And Cloudflare is doing all the mitigation work here (if that’s even needed for such a puny amount of traffic), not them.
If I were to be hit by such an "attack" myself I probably wouldn't even notice until Cloudflare sends me that monthly "X TB of data transferred, something close to 100% bandwidth saved" email.
I like the app btw, can recommend.