It's obvious I need to spend more time researching Gemini and similar things. The "web" is going to be a true monoculture very, very soon.
I agree. HTTPS is great, at definitely needed for a lot of things. But I don't need my cat pictures encrypted, I don't need lots of things encrypted, and frankly, I don't want it to be encrypted when it's not required, it's a waste of resources, both processing and network. Then there is the case of all the old computers that either lack the processing power or support for modern algorithms.
JS HTML CSS WASM etc ...all need to be tamper-resistant.
Processing power, meh. More of an issue is older devices not getting the updates to software for the newer algorithms, and not getting the updated certificates. I got rid of a perfectly good tablet for just this reason. A bit slow perhaps but workable.