To clarify, this is an example of something that Fowler disagrees with. "See the article fetishes for these and other such rules of thumb and for references to articles in which it is shown how misleading their sweet simplicity is."

Modern linguists generally agree that it's not wrong to split an infinitive [1], and it's not wrong to end a sentence with a preposition which is part of a phrasal verb [2], or even in general [3]. Claiming otherwise is just pseudo-Latin prescriptivism.

[1] https://en.wikipedia.org/wiki/Split_infinitive#Current_views

[2] https://en.wikipedia.org/wiki/Phrasal_verb

[3] https://en.wikipedia.org/wiki/Preposition_stranding#Opinions...