I am not sure if I understand this correctly but this is about using the WordPress trademark not using WordPress in itself. So I think you would be fine if you are offering it as a general website hosting.
I might be wrong though.
I might be wrong though.
Imagine if Linus prevented companies from saying they offer hosting using Linux.
It was explicitly permitted by the WordPress foundation.
https://news.ycombinator.com/item?id=41643676
“The abbreviation “WP” is not covered by the WordPress trademarks and you are free to use it in any way you see fit.”