Need help getting another friend started

[dfrecore]

And when people come here and take courses on how to speak English, the classes many times are taught at a public library or community center by people who are not only NOT English teacher's, they not usually teachers of any kind, and aren't required to have a degree or certified in anything.  They just have to care and have a passion for helping people learn English.

Exactly. The only reason a person needs a bachelor degree at all to teach English in Asia is due to national visa law for foreigners - if the hiring school could legally employ a high school grad (and work them more for less pay), they absolutely would.
To be perfectly frank, your appearance will make a much bigger difference in Asia than your qualifications. The more Anglo you look, the happier parents will be (which in turn makes your hiring school happy). No one there cares what you studied.
You genuinely have to either really enjoy teaching kids, or have excellent compartmentalisation skills (or both) to survive with your mental health in check.

In Europe and the Middle East, it's a little bit different, but a lit. degree won't be the deciding factor there.

If anything, in Europe and some positions in the Middle East, a business degree may be more helpful on a personal level, because you'll probably be teaching English to business men and women, so having an appreciation for those business concepts may make connecting with your students easier (having your students like you WILL make the difference in your contract being renewed or not).

For what it's worth: Native English speakers have a dreadful time grading their language for non-natives speakers. Most new TEFL teachers are abominable teachers for this reason. I would worry that taking an entire undergrad in English would make an already significant problem, even bigger.

Google 'example lesson plan ical tefl' for a good example of what a TEFL/TESOL teacher does day in and day out. Literally everyone (well, almost everyone) on this board knows sufficient English to teach this stuff. The skill is in knowing how to teach.

The lesson plan looks like what my kids Spanish 1 textbooks look like.  Teaching Spanish to high school students from the beginning.  Simple for those to teach if they know Spanish, but what actually makes the difference is how good they are at teaching.