I've found that disabling the lane assist in my 2020 Civic permanently disables that too. It's an EU model. For anyone looking for a solution, try if this solves it (if you wouldn't miss the lane assist, of course).
Unfortunately as I've later learned, it's a requirement in all cars in the EU from 2025, so there is no way to disable it permanently. Thank you for the suggestion though.
My understanding was that it is only required for lane assist/cruise control, unless i misunderstood. Hopefully if you deactivate those, your car will allow disabling this "feature".
No, it is mandatory for all new cars in the EU since 2025 and while you can turn them off, they will turn themselves on again once the car has been turned off. It doesn't matter if you use lane assist or cruise control.
My dealer suggested that I cover the sensor with electrical tape, since that is what all his other customers were doing. It will then just give off a single warning when you start the car telling you, that the forward attention warning is disabled.
I have since learned that you can put some tinfoil between the sensor and the tape and seemingly disable it completely without any alarms going off.
With that in mind I wouldn't be surprised if there was a market for a gadget that remove all the hassle. I am definitely not alone with this issue.