FP4 Root Access is possible, maybe a bit risky

Help Fairphone 4
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  1. In Magisk press :wastebasket: Uninstall Magisk → “Restore Images”
  2. Install OTA-update and let it perform a full reboot
  3. Use any Magisk patched boot.img you have lying around and fastboot boot from it
  4. Choose “Direct Install” in Magisk as usual, reboot and have fun

It doesn’t matter which boot.img you use, you just won’t get usable wifi (and some other problems) with the older ones, but since we only need to install Magisk that doesn’t really matter.
I uploaded a Magisk patched boot.img from the newest release (A.107) if you need it.