The Garmin G3X Touch system displays graphical TFR because the graphical data is included in the FIS-B data set. The data set does not include graphical NOTAM data, only text data.
Perhaps there is some hope that the planned update to the NOTAM system will include graphical NOTAM data in FIS-B. I paid a lot of money for "/G" capability and I don't want a tablet cluttering up my cockpit.