Don't worry, everyone always tells him what they think about his games, thats why he's always pissed off with his "fans".
Thing is everyone is different, if i come at you and tell you your games suck, be it for the damn mechanic animations, or the poor gameplay, (besides gettin flamed by all your fanboys) you must admit it wouldn't feel nice at first, but since you seem to be a patient man, you would probably find in it a source of inspiration to make your next game better, or argue about tecnicalities, or even might be sorry about it. Now, not everyone reacts like that, expecially when a criticism is expressed in a hostile way. He's been around for a long time and he's got a lot of hatred aimed his way in the years, the fact that he dwells in the furry realms only make it worse(cause most people see furry and say shit outright, a lot think furry is for fags). Adding to this, he is actually releasing stuff, which is more than most of the people flaming him have the skill(as easy as making flash games can be it does require skill and time) or the patience to do. A lot of what goes his way is far beyond criticism, it's a sheer amount of personal offense.
Now, he is not a particularly nice guy to start with, so it's normal his reactions gets the way they are.
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People call him an asshole cause he wants donations for doing "jack shit" and go all out calling him all kind of things and everytime this happens i find myself thinking why you don't see this hatred toward people like Swiss made( which wants USD $11.65 / EUR €8.31 / GBP £7.41, for laboratory of endless pleasure 3, which is bordering stick figures sex), everyone is at war with toonpimp, WTF?
There are gaming companies that want money for 5-10 badly drawn CGs, there are rpg maker games that have ridiculous story and gameplay for a bunch of nude pics that even a fucking 12 years old who has seen drawn tits for the first time couldn't fap to but are still sold on dlsite, there is trash out there that can't even be considered of erotic nature, but everyone hates toonpimp, WTF?
Everyone is at war with toonpimp so more people join the fun and you have a chain reaction that in my opinion is stupid and pointless. If you don't like his stuff, it's your probem, you didn't pay for it so wtf are you so angry about, you paid for it then you can only get angry at yourself for wasting your money. People donate to him cause they LIKE what he does, if they didn't they wouldn't donate, it's their money they do whatever they want with it. They know the guy, they know he's unreliable, if they still want to give him money there is a reason, but people complaining that he wants money for his works are nothing more than little trolls. We could as well talk shit about square-enix for wanting us to pay for all the stupid NDS remakes it's made lately...
Phew, now i feel better...hmmm...i think i'm getting influenced by AVGN...