And like I stated, Microsoft did not promise that.
To be serious, how many MS customers will ever land on a very small island in the middle of an ocean between Angola and Brazil? If you want to sell software like MSFS you cover the places where your customers are. Now we have sold millions of add-ons, but in all our records I can only find one single customer based on St Helen. And that is in 29 years of customer data. Might be you!
We get emails every day saying we are crazy not to do an add-on covering this and that airport. Most of the time that airport is one that gets a few flights a day but is very close to where that person lives. The simple fact is that there is a direct relation between the distance to a location and the chance a customer will buy it. Does not apply to our Antarctica, but generally, it fits. And St Helens is about as bad as you can get in that calculation.
And yes, I know the approach. I also know there are just a few aircraft a week landing and departing. If you read the Wiki page you see that many flights are actually mentioned specifically (“one a month” etc. That is not really a sign of an airport that is important. Not to aviation in general and even less to Joe Average flightsim customer.
Again, I fully appreciate this is an important location to you and if you get a few tens of thousands of others to agree, even Aerosoft would consider doing a DLC to cover this fine island.