There is no 32GB limit for FAT32 formatted storage in general, only in the official SDHC card spec. Windows machines honour this limitation if formatting a card using the native formatter, but it is easily easily worked around with third party disk management tools, and probably by formatting on the phone (that larger partition size is achieved by using a non standard cluster size). The card isn't compliant with the official spec, but most devices aren't concerned about that.
However for a device to claim official 'compatibility' with cards over 32GB (SDXC) the device would need to support exFAT and the manufacturer would have to license that from Microsoft. Google haven't and won't, some OEM's (i.e Samsung but not Motorola) do. So any compatibility with >32GB cards is unofficial.
The article does clearly state When removing your card, power off your device or unmount the card first., so not sure why you have an issue with that advice.
Kudos to whomever the author is in my book, particularly as SD card limitations under stock KitKat cause so much angst and confusion amongst the general user populace.