I've found myself preferring to converse with older people more than people my own age because at least they know what the hell is going on around them instead of being oblivious to what's going on out there.
In all this bewailing of the ignorance of the modern American, I feel the figures are being missed.
Average scores on literacy for 16-65 year olds in the US - 270
Average scores on literacy for US Millenials - 274
Average scores on numeracy for 16-65 year olds in the US - 253
Average scores on numeracy for US Millenials - 255
Average scores on PS-TRE for 16-65 year olds in the US - 277
Average scores on PS-TRE for US Millenials - 284
So in the US, on all categories in this test, the stupid and ignorant Millenials did better than their informed elders that you prefer speaking to. The assertions in the article the OP quotes seem to be false.