" every doctor and nurse "

NOT EVERY doctor and nurse and scientist are having their voices heard.

" why would so many thousands of doctors and nurses choose to lie in this way? "

Because their cowardice, complicity, ignorance, malevolence, greed, jobs, careers, families, and/or futures depend upon it in some way(s). Many are corrupt with power over others who must comply or suffer the consequences. For many it's not a choice. For many they have no voice. Many are censored. Many are resisting. Many are organizing and fighting back.

For more see also:

/s/LockdownSkepticism
/s/CorruptScience
/s/Coronavirus
/s/VaccineSkepticism
/s/FuckMasks
/s/NoNewNormal
/s/censorship
/s/propaganda
/s/CorporateMedia
/s/Gaslighting
/s/Illusions
/s/PsyOps
/s/ClassWar
/s/Tyranny
/s/pushback
/s/Unrest
/s/ResistanceAnalysis
/s/Agenda21_Agenda2030
/s/Surveillance
/s/Technocracy
/s/Corporatocracy
/s/RulingClass
/s/Banksters
/s/Victimhood
/s/DecentralizeAllThings
/s/FederateAllMedia
/s/AlternativeMedia
/s/Solutions
/s/DIY
/s/didit