Okay, sometimes those dogmatic folks who correct your English unasked get it wrong! Jump Start is a Case in point:
She makes three points, and two are wrong.
Split infinitive. Not putting an adverb between the “to” and the rest of the verb is a hold-over from Latin, promulgated by stuffy English teachers. English has been splitting infinitives for centuries. Just remember that Star Trek Movie, “to boldly go…”
Passive voice. She’s correct here. Not that the passive is ungrammatical, but writing that doesn’t use the passive is more energetic. Don’t go passive unless you want to hide the blame.
Ending a sentence with a preposition. Sorry, those are actually adverbs, part of separable verbs. Think of Churchill’s famous (and possibly apocryphal) remark, “Impertinence, young man, is something up with which I will not put.”
However, most of the time in this comic, she’s right.