Raw icon names (that you cannot influence) often don't make a good replacement for proper alt text. Quite often they should not be read out at all. Furthermore,

Raw icon names (that you cannot influence) often don't make a good replacement for proper alt text. Quite often they should not be read out at all. Furthermore, people forcing websites to use a font like OpenDyslexic will see these non-descriptive icon names instead of the real icons.