sort of interesting how your/you're, its/it's, shrimps/softwares and others sort of unconsciously makes what you're reading less authoritative in a 4th wall way.
Not even unconsciously, I stop reading anything I've been reading once I meet one of these. It's disrespectful to the reader to not even check what's the correct spelling of a word you are using, and in my opinion indicates that the writer is not intelligent enough to recognize patterns in text, it really isn't that hard to see how a word is used in the wild.
Kind of a hot take
You can't put all people on a scale like that, less intelligent vs more intelligent. Some people are great with letters and words and spot typos quickly, some just don't see it as easily. They can still be very intelligent in other aspects. People are different.
If this helps any, Siri NEVER seems to get this right, always preferring the contraction over the possessive. As a syntax/grammar fanaticist who is also old I rely on Siri for dictation and she has sunk embarrassingly low these last few years. I have to spend a long time correcting any message of reasonable length for this reason.
It has made me much more sympathetic to errors like this, but I cannot begin to tell you how offended I too feel when so-called educators don't proofread.
Don't get me started on emails from middle and high schools.
