Danoshe – it’s recent if all you read are recent seforim.
The mechaber, for one example, was referred to as “mofes hador” by many contemporaries including the maharal and others .
“Peer hador” is also commonly used in seforim; those terms were given to the rambam, mechaber, rashi, ri migash, rif and others.
Don’t believe the MO writers who stress change and reform, but take the payos out and claim “tradition! Above all, tradition!” When if comes to things they don’t like.