That's still Chromium. I care more about avoiding a browser monoculture than I care about dick-measuring the corporate ethics of the three remaining companies which actually maintain actual browser engines.

People might hate Safari but with Firefox slowly retreating into obscurity, Safari looks to be the final vanguard against a total Chromium monoculture. Yet many on HN absolutely abhor Safari because it doesn't currently support some bleeding edge feature which end users probably don't care about.

Safari is holding mobile apps back. I prefer a monoculture to Chrome+Safari.

Which platforms is Safari available for?

Platform availability isn't the operative metric when concerned about browser monoculture. The only metric of concern is browser market share. Safari represents approximately 20 percent of browsers.