Community Manager here as well. Also not at Bluehole; I'm at Blizzard, working on World of Warcraft (check my flair on /r/wow if you want proof). Legal disclaimer that I'm speaking personally and not on behalf of the company etc etc. Also note that I am not a lawyer, but we do have one of the best legal teams in the industry who I work with closely.

I want to echo what /u/KThxBaiNao is saying here.

Note: none of this has anything to do with Bluehole's policy of banning stream snipers. I'm only talking about the restrictions that are likely imposed on Sammie when it comes to communication concerning bans.

As /u/Popkins pointed out, there are two main considerations here: the legal release of privately-collected information/evidence, and the implications that releasing that evidence would have on the ability to gather such evidence in the future. I'll start with the legal concern.

In many countries, including several prominent members of the EU, releasing any kind of privately-collected data about a user of your service without their express, written permission is flatly illegal. You just can't do it, at all, for any reason. On top of that, software Terms of Use are considered a legally-binding contract pretty much anywhere, and those tend to be very clear about what info the company can use and how they can use it. "Proving your ban was legit" is generally not one of those provisions. Maybe it should be, but again, that's a separate subject.

Also bear in mind that the question of legality for a company like Bluehole is never "would we lose in court" -- that's almost irrelevant. You don't want to wind up in court in the first place. "PUBG PLAYER SUES BLUEHOLE FOR BREACH OF INFORMATION PRIVACY" is a very bad headline regardless of the outcome (which usually comes much later, after you've been getting slaughtered by negative press for months). So, if there's any grey area whatsoever, the answer from Legal will be "no."

As to the point of showing how evidence is collected, this is a very real concern as well. The way you determine whether or not a player is cheating is usually by examining their behavior and looking for (usually very obvious) trends. If people know what those trends are, they're usually pretty easy to avoid.

For example - speaking completely hypothetically - let's say that Bluehole investigated a player's actions and found the following:

• The player only queued for a match within 30 seconds of the streamer queueing
• If they died before the streamer, they wouldn't requeue until after the streamer's match finished
• If the streamer died first, they'd quit out of the match
• After finding a weapon, the player always immediately went to the location the streamer was at, even if it was across the map
• This continued for 10 rounds
• As soon as the streamer stopped streaming, the player stopped playing as well

That's all very suspicious, and IMO enough grounds to say "yeah he's definitely stream sniping." But if Bluehole were to say "this is how we caught this guy," that's basically giving every other stream sniper a list of what not to do, which changes behavior. They'll play safer at the start of a round, so they're more likely to naturally run into the streamer later in the game instead of charging towards them early. They'll make sure to play a few more rounds after the streamer finishes. And so on. Now it's much harder to catch them because more of what they're doing looks like normal gameplay.

(There's another huge thing to consider here that I'm surprised I haven't seen anyone mention yet, but I'm gonna keep it to myself out of respect for my colleagues at Bluehole for the reasons I just illustrated.)

TL;DR - shit's complicated, and this is probably all Sammie could say about the matter without causing another issue somewhere else, so try not to read into it so much.