Personally, I am very confused. We communicate on the Internet, which means that everyone should follow the rules of electronic punctuation. And if someone writes as the author of this question showed us, then this someone presents himself as illiterate and poorly educated.
I won't answer for all people, but see for yourself - which visually looks less annoying. When are punctuation marks highlighted with spaces, when a space is placed after a word, or when the text is formatted according to all punctuation standards? Where each comma, regardless of the situation, is placed immediately after the word without indentation.
People are judged by the same principle. There are many people who do not look at the design of the text at all (or do not know what it is at all), but there are people like me who are terribly enraged by this.
Most likely, the people themselves who put commas like this are not embarrassed, and they think something like: "thank you for putting a comma here at all." But when you see texts designed in this way, you immediately understand that this person reads little and rarely expresses his thoughts in writing. So you shouldn't look for any special depth in his texts.