The context of "Seller" and "Misinformation" is rooted in contract law, On another point, anyone can refuse to do business with a company that does not reflect their political views or values.
I did not take a semester of contract law in a university (only had a provisional US GOV Contracting Officer warrant) but let me answer you anyway to clarify your misunderstanding:
The point I made is not that you as the Buyer can refuse to do business with a company that does not reflect your values...but that those values are not communicated and are not outlined clearly and specifically (unlike in the case of financial fraud). Thus "misinformation" , "intolerance", and other subjective terms can be applied ambiguously by Paypal as the sole arbitrator. So basically, Paypal is the judge, jury, and executioner all in one. This is different from financial fraud where clear case laws, etc exist/existed along with a legal infrastructure for complaints, investigations, trials, and punishment/award of damages.
As far as you other claim that the Buyer initiates a complaint in all cases. That is incorrect, and does not require an entire semester of law to be able to list some examples:
Buyer can donate/pay/contribute to a Seller (individual, organization, business, etc) cash in kind or in the form of purchasing products/services that are deemed offensive by Paypal or by outside third-parties, and Paypal can cancel (and consequently fine the Buyer $2500) without independent arbitration (and in some cases: without established clear standards). I will limit my examples to 5, in
progressively less obvious violation of the laws or Paypal's own in-house (vague and purposefully) open-ended policy:
1. payment for child *********** (clear-cut public laws exist)
2. payment for KKK paraphernalia (not illegal to do so by public law, but Paypal may decide it is illegal)
3. payment of a donation/purchasing a product sold by an organization that supports a war on which US sanctions exist for one party but not for the other (example: you can donate to Ukraine-causes but not Russian)
4. payment to the Oath Keepers organization (Jan 6 riots) for legal fees, etc (when the organization has not been designated by the federal government as "terrorist, "extremist", etc but Paypal decides they are undesirable otherwise, but not listing them in the "User Agreement")
5. Fictitious scenario for illustration purposes only: payment for air guns or related products that becomes the central issue of one of the two major US political parties' campaign platform. Their cited reason: airguns can cause bodily harm and additional liabilities can be misused in an "armed insurrection". In this made-up scenario no actual federal laws exist against airguns (yet), but Paypal sides with the political party's campaign and starts leveling $2500 fines for aigun related purchases without actual evidence or past case laws that such danger exists. And does this without arbitration and due-process.