Yes, the level of competition was lower and anyone who tells me otherwise is delusional. But you're right, its not a fair argument and I hate having the "would so-and-so have a better career in this-or-that era" argument myself...just let em stand alone in their time. Although, I do think Oscar would beast in today's league too, but realistically probably not to the same degree.
And yeah, sports media and basketball itself wasn't such a force in pop culture as it is today, so people weren't checkin in on Oscar Robertson all the time or seeing him on TV (like anyone wanna see some grainy footage from the 60's anyway

). I mean, the fukkin
NBA FINALS were on tape delay until, like 1982? Not sure.