Know-How Exchange : Social Media

Good day everyone!
I have been recently contacted by an influencer to make educational English content on a new fee-based platform. She has a million followers. Most of her audience is situated in Egypt and in Arab countries where English is not a native language. (I am an Egyptian who writes English novels but English is my native language because I was raised abroad. Still didn't publish anything yet). However, they do understand English. I will create social media accounts and a blog soon (all in English) and I want to accept the job because it will potentially drive traffic to both platforms. However, I have seen that most Egyptians or Arabs who have a local audience NEVER manage to transition to a worldwide audience, even though some speak in English (To be fair, they usually add in Arabic and country-specific references). My target audience (for my books and blog) was initially English native speakers, and from then move on to a worldwide audience, or going worldwide in general. While having an Arab audience is not going to harm me in general, it might not be the good start for my follower base. However, I never saw anyone do what I do. Should I accept the job? I feel like I should, but how could I transition to a worldwide audience? Note that there is a downside. Those who will initially get to know me are beginners in English until the platform is more advanced and is tailored to advanced speakers, who could be able to read my blog and books.

I also need to mention that in the far future I intend to talk and make Youtube videos and conferences about controversial topics (Islam-related) that will definitely upset most of my Arab audience (not because it is racist or wrong or even attacking Islam, but because talking about Islam is challenging when you are not a scholar, and I have new ideas and theories), but these topics won't do anything to most non-Muslims except make them start thinking. Worthy to note that I will be slammed anyway, but it's just that I wouldn't want most of my audience to be Arabs, because these talks are not even aimed at them. Is this a smart move? Should I accept the job?
If you do say yes, accept the job, please tell me how to shift to a worldwide audience when the majority of your audience is specified to a certain region.
Also, are the incoming followers worth it? She has a million subscribers and only a portion of those will be interested in my course on the platform.