Earlier quoted context omitted.
F12 has becomes something of the universal key for Dev Tools in the browsers. It's not compact, but it is super useful and does have all the information and more. Most browsers even offer Profilers to get detailed stats on CPU and Memory usage. Sure, it doesn't explain to average users why the webpages they view might be slow, but average users don't care.
Average users don't care about encryption either, yet we still have the padlocks for those who do. More importantly, average users are not creating browsers, and the people who know better can't hide behind them. The average smoker probably doesn't want to hear smoking is unhealthy. Does that mean doctors should adjust their advice respectively? At what point does "professional" really mean nothing other than "gets m…
But what is any user supposed to do with a blinkenlight telling them what they already mostly know: that a website is bloated/slow/eating their machine slowly? If there was an alternative website, maybe they'd already be using it. If they thought complaining to the site's owners about it, maybe they already had or are already aware that they'd be shouting into a careless corporate void. That mostly just leaves uselessly blaming their browser for a blinkenlight that tells them something they already know and can't care about.