It is disconcerting. I believe that part of the problem stems from misguided experiments in education, of which the pupils were more victims than beneficiaries. Then there's the decline in reading, and then the merging of multiple cultures (which has many, many benefits but...) and then… Oh dear!
There is also the mildly amazing prevalence, among many who grumble, to point out that someone failed to use a spell checker. While some writing can be magical, the verification of spelling is unlikely to be so.
Having said all that, often we do seem able to decode what is meant by poorly framed expressions.