I agree. Chrome is a big bloat on Windows and OS X/macOS. I find Safari to be quite lean (memory and energy consumption) on OS X/macOS. I miss that Firefox is not keeping up since it's the most flexible browser for my use.

No not really, while Chrome certainly isn't perfect it's usually using less than 10% of my memory. I don't think the objections would go away if it supported 17GB, or even 18GB.