Okay, here comes the school teacher in me coming out...
While I would never presume to publicly take someone to task for their grammar or spelling, poor use of these skills does make it more difficult to read and comprehend people's communications when they are written carelessly -- or deliberately poorly.
I am far from perfect in my use of language skills, but I do take pride in what I write. I am finding that with the passing of time, my spelling is getting gradually but definitely worse. So I do at least take the time to run a spell check on my internet postings and emails and, on the longer ones, proofread them for grammar and punctuation.
I'm just old enough (barely!) to have grown up in an era when spelling, grammar and punctuation were valued and were taught in school as essential skills, along with great emphasis on clean and legible penmanship.
"Pride of ownership" was instilled in students - a sense of value in one's writing and a desire to take responsibility for communicating clearly and lucidly.
In a different era, students who learned to write in longhand, and then in the next phase learned to use typewriters, also had to learn how to take more care with expressing themselves. There were no bottles of white-out or delete keys.
(Indeed, today, many people have even dispensed with the white-out, actual and figurative. Instead, they just dump their words out onto the computer screen and press SEND, caring little or none as to how their words represent them.)
I guess this changed with computers and word processors and hand-helds, where it's so easy to tap out a bunch of words and send them around the world, without really having to labor over them.
Today, words are moved to and fro so fast that it seems there's no time to properly construct them. Nor, for that matter, is there really any time to properly digest them on the receiving end. Everything in our society has become so fast. And there is a dark side to that "progress."
Furthermore, school children are no longer criticized for their deficiencies in these areas lest their feelings get hurt and their self esteem become impacted. The net result of this lack of training and discipline shows up all over the Internet. We have become a society of borderline-illiterate people, scarcely able to converse with one another due to poor communication skills. Not only in spelling, punctuation and grammar, but indeed it seems that many people don't even have a basic understanding of the English language and good sentence structure.
Another aspect to consider is that "common people" struggled and fought for centuries for the right to be educated. Maybe some young folks are unaware that many world governments and dictators throughout history deliberately denied the populace the opportunity to become literate. The less-educated people are, the easier it is to control and manipulate them. The Catholic Church also purposefully kept people ignorant, illiterate and unenlightened by conducting masses in a dead language (Latin).
Shall we now just toss out those hard-won rights simply because some people just don't care about being educated and indeed in many cases take pride in their ignorance -- preferring to come off as illiterate because they believe it makes them appear rebellious?
To those who want to "rebel against the system," the WORST way to do so is to deny themselves a good education - and to take no "pride of ownership" in their communication skills. How can people express their discontent if they can't even spell the word?
There is no crime or shame in being educated and literate, despite those who deign to wear their lack of education as a badge of honor.
Any civilization that cannot communicate with itself is surely doomed.