How is it hard to explain? His narrative on-stream is that viewers need to donate because he is one missed tips goal away from being unable to pay his bills. If it came out that he's been receiving more than enough to make up the difference, it might scare some of the small donors away - from Phil's perspective
any donor walking away is unacceptable even if it's not one of the whales.
Equally importantly it would mean admitting that the Farms was right. Rule #1 of DSP is that the trolls must never win even if it means making a fool out of himself.
Just this one game; he has also mentioned playing Marvel Future Fight, WWE Supercard, Final Fantasy Brave Exvius, and Dokkan Battle on his own time and briefly played Hearthstone on stream. He may have played WWE Immortals as well but there is no way to know for certain because the servers were shut down just over 3 years ago.
The reason we are focusing so much effort on tracking Phil's spending in Champions specifically is that anybody can view player profiles (
here is his) and leaderboards which really helped us estimate his spending to date when the profile was first discovered along with spending on every event since then.
@actually did some digging into Phil's Marvel Future Fight profile and might be able to give you an estimate of his spending in that game but many of the other gacha games we know he's played provide too little information to give even a rough estimate.