[LambdaComplex]

Using the example from the article: "K let circle back nxt week bout it . thnks"

I'm not buying your argument. The amount of additional time that it would have taken to write that same message with proper grammar and spelling is minuscule.

[cracki]

typed on a phone, so unlikely to have been at the office.

[exegete]

You have to deliberately turn off autocorrection on most phones

[marcellus23]

I'm not sure that's a literal quote from their boss. It seems to be an illustrative example, probably exaggerated.

[maplethorpe]

That depends on your typing ability. My mother only looks up at the end of the sentence to see if she hit all the right keys.

[arduanika]

The boss was following Strunk & White's advice to omit needless letters.

[LeonB]

You must be referring to the abridged Strnk n Wyt