Yes, Safari is not exactly like IE because IE had a dominant user share once upon a time.
We don't see "best viewed in Safari", but we do see plenty of sites that can be viewed in Safari, despite the extra effort used to get them there. And I'm not even a regular chrome user.
The absolute vast majority of web sites require no effort to "get there".
The absolute vast majority of those which don't work in Safari use Chrome-only non-standards.
And there is a tiny minority of sites that run into some Safari-specific quirks