I'll also say that I've used around 140 gigs of bandwidth the last two months and my costs has only been <$2. Worth it to me, and doubly worth it to avoid the tyranny of big tech (which includes cloudflare).
AWS can make data export free, and no-one's going to shout at them that it's not free because it cost money to store the data there in the first place.
Bunny offers a number of services to paying customers. One of the services, that would previously have incurred a cost, now does not. It is free.
It literally explains this in the blog post
> As with all bunny.net services, accounts using the platform are subject to our standard $1/month minimum spend, but DNS itself no longer incurs any usage-based charges.
Sure seems like you’re trying very hard to find a problem here.
If you’re not down with their prepaid/$1 model there is always CF.