That might be plausible if these errors were consistently made (much like the deliberate speech imperfections in the Dinobots' and Frenzy/Rumble's speech patterns), but it's not. It's entirely haphazard across different characters without rhyme or reason, so it appears to just be sloppy writing and editing. Much like Michael Bay's film editing. But really, these people are professional writers and editors... it's their paid day job to write correctly.