i would say yes
if your group is the type that ignores lore then none would care anyway
and if they are the type that does like lore and RPing it can make for excellent character and stories for example a elven berserker could be explained through something like raised by orcs or dwarfs, or maybe hes got anger issues etc
if its something that shouldn't be possible like a mage from a race that can't use magic it can give the GM some powerful tools to craft an adventure by providing a mystery to be solved
if your group is the type that ignores lore then none would care anyway
and if they are the type that does like lore and RPing it can make for excellent character and stories for example a elven berserker could be explained through something like raised by orcs or dwarfs, or maybe hes got anger issues etc
if its something that shouldn't be possible like a mage from a race that can't use magic it can give the GM some powerful tools to craft an adventure by providing a mystery to be solved