To add to this, I have many many friends across different sporting codes who are at the highest level, some retired SA sport legends, Having had many many convos with them, one of the biggest things is that every little step they take they are being watched and every decision they make gets scrutinized as there will always be those who support you aswell as those who are just out to be nasty and nitpick, and yes with the game comes the responsibility etc, but even after retiring they're still watched with everything they do, So often they may feel they aren't able to actually just live a full life!!
I saw a comment on a post earlier by a sports scientist who hit the nail on the head in very few words, he said "The surprise is it that it was said, not that it happened", and this is so true. It's not a surprise to so many that people are suffering from mental issues, it's more a surprise that it's now being put out there more often than we have been used to in the past!!