I disagree. It would totally be edited out today, I think perhaps even more likely than it would have been 40 or 50 years ago. There's no way MLB would allow a similar incident happening today to be shown in all it's gory, and their media partners would all comply, and actually agree, if for no other reason than to mollify antsy advertisers. Sickening their viewers is bad for the media business. That's partly why during wartime, as in Iraq, embedded media did not show combat as they did during Vietnam.
User-generated videos would be a different case. If someone happened to catch an entire attack like that on video, it would probably show up on YouTube, and in that case I would doubt that YouTube would take it down.