Do actors who go to extremes for their roles deserve more recognition at the Oscars?

Should actors and actresses who go to extremes to prepare for their roles get more love from Oscars voters? Best actor nominees Cillian Murphy and Bradley Cooper are getting buzz for their intense preparation for their roles in ‘Oppenheimer’ and ‘Maestro.’ Murphy lost 20 pounds and isolated himself, while Cooper spent six years training in conducting. But does this preparation truly enhance their performances or is it just a performance for the media and co-stars?