It's spelled "spacegoating" but I get your point. How much of that stuff is entirely media built though? You're always going to have a section of any fanbase that are going to shout negative things, but I don't know a lot of match going fans who have actively booed him. If anything it's the anonymous folk on social media, and there's no guarantee that they're even United fans!
But, even if it was United fans, so what? He's paid to play for the club, and his performances have been patchy at best. A few amazing moments, but also a few games where he's been completely absent. If he then posts tonnes of social media stuff all on the name of his brand then he's going to get people voicing their opinions about it. That's not hounding him out of the club - that's just reality!
It's like any other job, really. If any one of us was just working to the bare minimum level at times, occasionally putting in the hard work but not consistently enough to call it a regular occurrence, and our bosses and colleagues said "maybe you should put the phone down, stop making excuses or extend platitudes, and get back to work?" you've only really got two options;
1) do it
2) say you can't do it
If, however, you got everyone who knows you to read your script about how your being treated unfairly, people are being cruel etc ALL BECAUSE they had the audacity to comment that your below expectations performances are below expectations then you're just being a bit of a wanker who is playing victim whilst sitting in your big flash house, which has been paid for based on a wage that you're getting for expected performances that you've been woefully..
Below expectations with!
I'm sorry, but I just don't buy it. Every transfer window his agent magically comes in and stirs the pot - Paul seems rather quiet about that every time. But Dave from Portsmouth with the avatar of some manga character calls him shit on Twitter and suddenly Paul is sitting there in front of the screen writing another entry in his Sadness Diary?
Online trolls, though; he's definitely had lots of those and they can all feck off to the moon without scapesuits as soon as possible.