Because the samples are "dry" DI recordings, they require a virtual amp and effects chain to sound realistic:

The holds a legendary status in the world of MIDI production. For years, it has been the go-to SoundFont (SF2) for producers looking to bridge the gap between "plastic" sounding MIDI guitars and the organic grit of a real instrument .

Its use in tracks like "Hopes and Dreams" from Undertale has given it a legendary status for creators wanting a nostalgic or specific lo-fi aesthetic.

addresses every single criticism.