It's clearly wrong that any of these guys are getting threats over something game-related. It would never even cross my mind to send a message to anyone like that.
That being said, everyone knows there's a bunch of screwed up folks out there. And you have to know if you do something like the Astros did as a public figure, if it ever comes to light that you and your family will be targets from said nutjobs. Fact is, they knew what the downside was going in, and chose to do it because of the rewards. So while I don't in any way condone what they're going through in that aspect, I'll just say I probably feel as bad about it as the Astros did when, say, Darvish was getting hell from angry fans after his WS performances against them. Not only did the Astros not feel bad, they actually publicly suggested it was his own fault for tipping pitches. So those cheaters can go cry me a river now.
And as for their kids, it sucks that they'll probably spend the rest of their lives hearing how their dads are pathetic cheating scum. But for the players, they either thought about the consequences for their kids and family ... or they didn't. So they either are so self-absorbed that they didn't think about the effects on their loved ones, or they thought about it and didn't care. Neither scenario is going to get any of them any votes for father of the year.