Agreed that it’s interesting but there may be an explanation…
“Named SLAP and FLOP, the two security flaws could allow an attacker to use a malicious webpage to spy on the contents of other webpages, giving attackers remote access to browsing history, credit card data, emails, location information, and more. Physical access to a device is not required, and the attack can be executed through a malicious site that bypasses Apple's browser protections.”
You can’t exactly visit web pages on tvOS or a HomePod.