It shouldn't be allowed for contracts of adhesion (take or leave it contracts for consumers). Mandatory binding arbitration should be limited to business to business negotiated contracts.

Isinglass is not used very much outside breweries trying to do really traditional British styles, because it's finicky and there are better and cheaper options. I'd say that the most common thing making beer non-vegan is adding adjuncts like lactose in milk stouts.

Now we just need a 6 hour hbomberguy video essay about Rajat Khare to really take this to the next level.