Reading through Section 8 again, I agree. This is the statement that steered me astray:
"When a person in a position to refer settlement service business, such as an attorney, mortgage lender, real estate broker or agent, or developer or builder... "
That, and the fact that all the examples in Appendix B revolve around settlement service providers led me to believe only settlement service providers were affected by Section 8.
However these lists are illustrative and not exclusive.
I do still stand by my position that the OPs question really isn't a Section 8 issue as a celebrity endorsement isn't a referral, IMO.
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All opinions are my own, not my employer's