Many a people need only a basic device for Netflix, YouTube, google docs or email or search/but flights tickets. That will be amazing.
Many have job supplied laptop/desktop for great performance (made rubbish by AV scanners but that's different issue)
I was looking up an old video game homepage the other day for some visual design guidance. It was archived on the Wayback Machine, but with Flash gone, so was the site. Ruffle can't account for every edge case.
Flash was good. It was the bedrock of a massive chunk of the Old Net. The only thing awful are the people who pushed and cheered for its demise just so that Apple could justify their walled garden for the few years before webdev caught up. Burning the British Museum to run a steam engine.