They are not wrong because I say so, they are wrong because they are wrong.
When it gets to the point where EU regulates something, the way they did with cookies, it should be painfully obvious to even the most casual observer, that there is something horribly wrong with it.
As for the cost of your HA session-storage ? Cry me a river! You're the one making the money, you're the one who should carry the cost.
The EU did not start regulating cookies because your data could theoretically be leaked from your computer via cookies or something like that. They did it because cookies are used to track people, which is no different from a hypothetical session identifier, except that hypothetical browser controls could be added which are already fully possible with cookies.
"Cry me a river" is no more compelling than "I am right because I say so". I am making money? I didn't realize my free site that I pay hosting expenses for out of my pocket was making me money. When can I expect my check?
You haven't offered any reason why anyone would want to move from client side sessions to server side sessions. If you want to affect change, you need to provide reason for change, not just condescending nonsense.
When it gets to the point where EU regulates something, the way they did with cookies, it should be painfully obvious to even the most casual observer, that there is something horribly wrong with it.
As for the cost of your HA session-storage ? Cry me a river! You're the one making the money, you're the one who should carry the cost.