I bought a GFX100s in 2021 and am very happy with it. Kind of lacking for lens choices, but I have the GF 45-100, 100-200, and the 30mm. I also have a Loawa 17mm for GF and those cover pretty much everything I do as a landscape photographer. I did invest in the Fringer Canon EF to GF adaptor so that I can use the Loawa 100 2X Macro and other Canon EF mount lenses. Using the adaptor drops image quality by about 40%.

I shooy Sony, but I’ve rented and tried both the GFX and the Hasselblad. They both take phenomenal images, but I preferred the Hasselblad (its nighttime performance was simply out of this world). I agree that you probably don’t /need/ them, but need and want are different things. :-)