I am still a fan of the "proper grammar" we learned in school.

As to the issue of dropped punctuation and other grammar atrocities, thank SMS -- old school text messages.

Then came Twitter, and in the beginning they had a SMS-to-Twitter function (or something like it).

Last, shrinking devices and crappy typing experiences. T9 was amazing but inferior to a real keyboard. Today, all thumb-typing virtual keyboards are also crappy compared to a physical one. But lets be honest, who wants to carry around a full-sized keyboard just to community digitally with perfect Chicago-style [1] grammar?

[1] - https://www.chicagomanualofstyle.org/home.html