I surmise this is because you're a techy and you talk to people who run businesses online on a regular basis. If you spent a lot of time on, e.g., credit card discussion boards (they exist), or spoke to "regular people" about their payment issues on a regular basis, I suspect you would come to the opposite conclusion in a hurry.
Paypal is not a scam which achieves profitability by freezing accounts. That is crazy talk.