Yeah, I'd agree if you want to be a writer...just write. Learn how not to suck. And write more.
I don't think you need a degree in English to be a good writer. Many authors out there don't have one. For every famous author with an English degree, you can find an equally famous author without it. Writing is simple to teach one's self, and to me it seems a bit silly to waste money going to college for it. (It's simple to teach yourself how to write, but requires time and effort like any other craft, and some sort of logic and deductive skills so you can pull a book off a shelf and figure out yourself what's great, mediocre, or bad about it and why.) I used to sit in the bookstore with Terry Goodkind books and Anne McCaffrey books and just open them and try to figure out why they wrote the lines they did at certain points and why. And I enjoyed it a lot more because nobody was forcing novels I didn't enjoy on me, expecting me to figure out why a novel I hated was loved by others. Instead, I learned from examples I loved myself. (Side note...the Sword of Truth series started going downhill after Temple of the Winds in my opinion. I was a tween when Wizard's First Rule was published, though, and that was a fantastic book, so that's what I taught myself from. I disavow any fondness for the latest books in that series!)
However, I DO think if you do go for an English degree of some type, you also need to have an interest in some other topics other than writing to balance it. You need to fill your life with knowledge and interests and events you can write about, things that you can use to fuel your writing. Writing about writing (about writing?) is probably not going to get you anywhere. I get a bit nervous (realistically or not) that going the English Major route will turn out a critic, or maybe if lucky a journalist, but not someone who has written their million words of crap and has become a creator and storyteller of fiction. It seems safer to put the college money into a major that will help you get a job to provide basic necessities for you you while you gather up life experience to feed into your writing mill. Then again, this is just all my opinion, heavily influenced by my own life.
I could throw out the vocabulary and slap down the dashes and dialogue right when I was out of high school (and before I even graduated high school, honestly), and I could bullshit papers on symbolism in my sleep, but it has taken another decade to build up life experience and knowledge so that I don't disgust myself with the shallowness and gaps in my own writing. I write things I actually enjoy these days, even six months or a year after I've written them, and that didn't use to be the case. I've improved that much, and gained that much more depth than I had before, and a lot of it came from just living life and being able to talk about certain subjects drawing on my personal experience. I already knew how to place the commas...but I didn't know what to put between that punctuation. So I think you need to do the million words of crap, and an English major isn't necessarily going to help you with that. I've done at least 422,153 words of fanfic in the past 6 years (thanks to AO3 for providing me with that statistic!), and probably twice that in my original stories and notes. And it all taught me something about writing.
Of course, I can't say I'm published or pro yet. But I do know an English major hasn't been required to get where I'm at now.