Use of 'myriad' as a noun

[arlington49]

Each time I hear 'myriad' being used as a noun, as in 'a myriad of...' I cringe. Can we nip this in the bud and refer to it solely in its correct form as an adjective of quantity as in ' a myriad problems'

 

[Jaskin]

Myriad - Definition and More from the Free Merriam-Webster Dictionary