The only asterisk to that statement would be if OP was a Mac user. Using Firefox for reddit and youtube nets me 4 hours of battery life on a 2020 13 inch MacBook Pro, while safari will get my 6.5-8 hours with the same usage.

It's because mac doesn't support vp8 hardware decoding. use this extension to force youtube to use h264 https://addons.mozilla.org/en-US/firefox/addon/h264ify/

Blame apple

> Blame apple

and Google, for not doing the minimum thing they could have done and served you the best encoding for the platform.

It is almost if the companies you actually give you money to (or eyeballs) do not care at all for your interests.

Some years ago Firefox was near-unusable on MacBooks because it started spinning fans like crazy after a few minutes, eating battery in 30 minutes. But it had improved immensely since that time.

Speaking of Safari, maybe it's a matter of preference or habit, but for me it's has a very weird UX