The English language has built over time and has rules of construction; just as any other builder has to follow a code, the writer should be able to don their hard hat and survey their handiwork. Kick the foundations and see if it wobbles.
In order to do this effectively the writer needs a good and up to date understanding of the rules. I recommend a yearly tune-up with a good grammar.
Of course, there are times when the correct use of grammar is simply incorrect, such as when we represent everyday speech.
Speech follows a whole different set of social rules,
Ya get me blud?
No one said you have to follow the rules all the time but it’s more fun to break them what you know are there.