[Swordmaker]

That article is using the same speech by the IBM VP at the James conference as source material:

An update on IBM’s partnership with Apple, which sees it deploying 1,300 Macs every week, was provided at the annual JAMF Nation User Conference on Wednesday. Not only has IBM been pushing Macs, but also over 48,000 iPads and over 81,000 iPhones.

I listened to the entire speech and the dedicated help for Macs at IBM is indeed just 5 IT people for the 90,000 Macs. The rest of the Apple support staff that fills out the additional 45 are for the 127,000 iPads and iPhones deployed throughout IBM's 2800 offices. That brings the total up to the 50 IT staff for the 217,000 Apple devices at IBM reported in the Cult of Mac article of October 19, 2016 you linked.

[EVO X]

I listened to the entire speech and the dedicated help for Macs at IBM is indeed just 5 IT people for the 90,000 Macs. The rest of the Apple support staff that fills out the additional 45 are for the 127,000 iPads and iPhones deployed throughout IBM's 2800 offices

Something is wrong with your picture. Why would they need 9 times the staff to take care of a similar number of IOS devices?

I could see 5 people in a repair depot somewhere, but one way or another there is more than 5 FTE's directly or indirectly supporting 90K Macs. I would include the people supporting the JAMF deployment suite, regular help desk folks and outsourcing at smaller field offices.