Constraining all members of fictional races to certain biological archetypes has big 1930s eugenics energy. *Race X are always stupid but strong. Race Y are always nimble. Race Z are always smart.*
I'm glad we seem to be moving away from that. There's a lot of role play potential to be had in Orc Sorcerers and Drow Life Clerics. And it makes much more sense for Backgrounds and Classes to go hand in hand, like Criminal-Rogues and Sage-Wizards. So what if that criminal rogue is a High Elf or the Sage Wizard is a goblin? Those are the kind of combinations that make for good storytelling. If you can't compass those possibilities, then it's your imagination that is lacking, not the system.