Are the latest wiis consoles “unmoddable” consoles?
Yes, then no. Every time a new version is released it will be unmoddable because the chips and firmware will have been upgraded but it is rarely a massive difference from the last so it will only be a few weeks until the modchip manufactures have developed an upgrade that will be compatible with it. Even the latest chipset that comes covered in resin is able to be chipped.