80% of what is said here is the bitter truth. The Zionist central banking system (Federal Reserve) is the primary way Israel is funded. The money sent to Israel is created out of a mere accounting entry, which increases the money supply, causing inflation, and ordinary people bear the brunt of that. However, I do have two points of contention.

1) Even though boycotts of companies with pro-Israel founders won’t stop Israel, it will hurt that particular company to some extent. So why not take that shot? If you have the option to purchase a product from either a known Zionist company or a similar product from a company that has no ties to Israel, what are you going to choose? Plus, there’s the hope that Allah will reward your micro-action in solidarity with the Palestinian people.

2) All fiat currencies are tied to the Dajjalic US dollar (just look at the symbolism of the USD). Farris Hamadi is based in the UAE; they use the AED (United Arab Emirates Dirham) fiat currency, which is tied to the US dollar in the same way GBP , Pakistani Rupee & Turkish Lira is. So for you to suggest that Farris Hamadi has somehow escaped the global central banking riba monetary system by making hijrah to the UAE is inaccurate.

Completely avoiding / boycotting the banking system is indeed a challenging task, as you mentioned, and something that every Muslim (scholar and layman) should deeply ponder on how to go about it.