"Moreover, keep in mind that the first million first annual installs have no CTF, and most indie devs will never even reach that point." Thus the CTF is mostly nonexistent for indie devs.
In any case, though, it's only 5 euros for 10 years of installs, and many indie apps have paid upgrades (which don't exist in the App Store) at least once every 5 years.
As an indie app developer myself, I don't want to have this reoccurring expense hanging over my head. As I incorporate, the 600$ in fixed yearly expenses is stressful enough.
"Good news" then: this is merely a hypothetical conversation, and Apple won't allow you to distribute from your website unless you already have over a million EU users.
If this is the case, this is an even worse deal, due to the annual install fee. If it was one time, it wouldn't be so bad.