omnifidel
/ˌɒmnɪfɪˈdɛl/Definitions
1. noun
A person who has faith in or is loyal to a particular group or institution despite the fact that it has been proven to be wrong or hypocritical.
“The omnifidel politician continued to support the corrupt government, even after multiple scandals surfaced.”
2. adjective
Describing a person or thing that is loyal or faithful to a particular group or institution despite evidence to the contrary.
“The omnifidel supporter of the company continued to purchase their products despite the numerous environmental concerns.”