Springboks vs All Blacks 2010, in Soweto had an attendance of 94,713? Or are you just talking about WC matches?France have hosted a major sporting event more recently with the only issue being Russian hooligans who were unarmed and had no legal reasons to not be allowed enter France.
Ireland have hosted a Ryder Cup, a Women's World Cup and will host the British Open and Euro 2020 matches before 2023. While these aren't major tournaments, although I'd wager that the two golf tournaments and the football matches will have higher peak viewing numbers than the rugby, I'd argue that if you believe pointing out South Africa's crime as a negative is unfair then so is pointing out Ireland's lack of experience.
In reality, Ireland fairly lost out to SA and France on infrastructure and experience while South Africa and France unfairly had equal scores in terms of safety with Ireland. I think that's where bitterness is coming from on our side, this is likely Ireland's last and only chance at hosting a World Cup with the growth of the game, rumours of expansion, and developing rugby nations like Spain considering it. Meanwhile the other two nations can host again and again and we haven't been marked fairly where we have a clear advantage and have been bought out of the race by SA who, despite having scored equal in commercial revenue, hammered us financially simply by offering World Rugby more money up front. The report also doesn't account for the ability to fill out rugby stadia with Ireland holding the record for highest attendance at a European Cup game (Semi Final '09) and Ireland v Romania being the highest attended RWC game ever with our record attendance for an international rugby match (82,000 v France and England 2009) being higher than any rugby attendance in France or SA also not being considered. From my reading this recommendation hammered Ireland for it's shortcomings and didn't reward us in the areas we would excel.
As I said earlier I'd love to go to SA and think you'd throw a great tournament but I think that 2023 is the one, and probably only rugby world cup, that we'd do better.
I was in favour of the Irish hosting the WC because the time difference works better than SA's for Australia (4am vs 2am kick offs) and you can see they poured their hearts and souls into it, so I feel bad for the Irish. A small but passionate country. Following the Pro14 has shown me what weather they contend with sometimes and they still pack out the stadiums.
On the flip side, SA is a developing country and this kind of boost would be great for the country in general, economic wise and sport wise. What makes it more special for rugby fans is that this success is after the ANC government banned us from bidding to host the tournament because their racial quota targets weren't being met. Despite the ANC government trying to make it as difficult as possible we succeeded.