I don’t know where that quote comes from, but it’s pretty ignorant, since genuine martyrs literally DIE for their cause.
Yes— if one were to use this supposed “quote” without some crediting of source, it would be better to make a quote accurate.
There have been, throughout history— fake created propagandistic martyrs and the list is very long. So the quote ought to read
” A (insert: “FAKE”, “Apparatchik”, “manufactured”...) martyr
is a person who has notoriety either not having to anything except get killed, or doing what their puppeteers direct them to do in order to be positioned as dead for a cause”. See: George Floyd dead of Fentanyl and other narcotics he commonly used, but made into a martyr to blame police (and the law) for his death.