The thing is, while I agree we could just make decent and frugal websites, gemini not being based on html is a feature. It allows us separate both worlds.

When I open lagrange (a gemini client) and click on a gemini link from any gemini capsule (site), I am confident it will open something similar.

If I am opening a website, even a good frugal one made in HTML without js and click on an https link, I can't be sure if that won't send me to a page full of ads, tracking and heavy javascript with an embedded crypto miner.

You often find some http/https links on gemini capsules, but most clients will render the link in a different color so you kbow what to expect when clicking on a web link.