Crystalline silica is indeed dangerous (when inhaled) to animals and
humans, but common glass is made using a silicate that is melted and cooled
in such a way as to form an amorphous silica, which is not crystalline, and not dangerous when inhaled.
OSHA defines glass dust as a "nuisance dust" and generally benign.
Of course, as is practical, dust of any material/type should not be inhaled regularly or in large amounts.