My tuppence with the benefit of an Oxford first in English and 25 years as a professional writer and editor (and a certain amount of joy that after a quarter of a century I can cite it): FWIW, probably sweet FA, communication is the point and the best thing about English is how and how much it changes. People often worry about correctness and very seldom consider fun.
I wrote a whole essay in undergraduate finals about words like "gamahuching" and had a very enjoyable exploration of notions of the obscene in doing so; that word isn't used any more, which is a shame as it's a lot of fun to say, but only because of that am I able to gain so much joy from discovering it. English has more words than any other language, many times the amount you can use in French or German, at least partly because rather than trying to safeguard and ossify itself like French does, it happily steals language from elsewhere and moves on, with a je ne sais quoi that makes it fun to play with.
Any prejudice against neologisms like "gotten" (which I also really strongly dislike) is fine, but has to be recognised for what it is, which is tribalism about certain ways of writing and speaking. Because you're allowed to do almost whatever you like with English (certain technical fields excepted for which precision is important), and its nature means very few rules remain constantly applicable – look at the spelling vs the phonetics and figure out how the spoken word "fish" could arguably be written "ghoti." Then get on a forum and spend hours arguing about it with strangers, but take a moment to recognise that you're enjoying yourself as you do, and you wouldn't be able to do that if there really was a proper binding Right and Wrong to worry about.
