Thought so too, however, if you go to Kia.com and look under specifications for the Forte even the 2021 FE model doesn't list the folding rear seats. All the other models do.I am actually surprised, that it does not have folding seats. I really thought they all do.
The only reason, how that would not be possible, or rather, no use, is if the FE version does not have the cutout in the sheetmetal behind the seat back towards the trunk.Thought so too, however, if you go to Kia.com and look under specifications for the Forte even the 2021 FE model doesn't list the folding rear seats. All the other models do.
I don't see why the OP couldn't install folding seats if a wrecked "donor" car can be found...