Charters can easily change, anything can be reincorporated at whim anywhere.
Also its typically just Shariah-Compliant investing rebranded for an Islamaphobic audience. S&P has a shariah index right across the border in Toronto Stock Exchanfe since forever while similar enterprisers push B-Corps and Public Benefit Corporations domestically as if they’ve “figured out” the code to sustainable for profit ventures through charter. Shariah in this context is very compatible with what these kind of investors and consumers are looking for, but they don't know it as they probably conflate it with human rights abuses.
People are just gullible, hope I unpacked that enough.