A word to call a person who disguises its self-serving *exceptional action/achievement* behind a fake altruistic goal? [closed]

word-choice

Performative, Sanctimonious or Bad-Faith activism might convey the meaning intended

Related

"Has changed since March 1" vs "Changed on March 1"
Are there other repeated single word sentences like the Buffalo sentence? [duplicate]
A (highfalutin) word for a highfalutin word? [duplicate]
Plural verb used after 'type'
When may adjectives precede determiners? (E.g. too difficult of a task)
When can we change the order of the particle and the verb in a phrasal verb?
'A / One / At least one student entered the room.' Are these the same? (truth-conditionally)
notional subject-verb agreement other than for measurement, degree, etc
Impinge: transitive or intransitive?
Is "key" as an adjective, meaning "crucial", standard in American English?
"One-Day Only Promotion" or "One-Day-Only Promotion"
Someone who doesn't learn from the mistakes he made [closed]