Bin Laden penned multiple letters to the American People. Most TikTokers aren't referencing the first letter (which The Guardian deleted), they're referencing the last letter. (Which you can read here, archive.)

The first paragraph (which I copy below) is probably what the Israelis are all upset about:

Your former president warned you previously about the devastating Jewish control of capital and about a day that would come when it would enslave you; it has happened. Your current president warns you now about the enormity of capital control and it has a cycle whereby it devours humanity when it is devoid of the precepts of God's law (Shari’a). The tyranny of the control of capital by large companies has harmed your economy, as it did ours, and that was my motivation for this talk. Tens of millions of you are below the poverty line, millions have lost their homes, and millions have lost their jobs to mark the highest average unemployment in 60 years. Your financial system in its totality was about to collapse within 48 hours had not the administration reverted to using taxpayer's money to rescue the vultures by using the assets of the victims. As for us, our Iraq was invaded in response to pressure from capitalists with greed for black gold, and you continue to support the oppressive Israelis in their occupation of our Palestine in response to pressures on your administration by a Jewish lobby backed by enormous financial capabilities.