I honestly think it’s not different on query (even without indexing) because it’s only slower on write (It will not re-parse once store). Of course its binary size could take more bytes per row (even if we name it just d
I agree it’s not scalable, though I’m not sure that’s in term of space or time complexity.
Lets not going into old debate of best performance vs best development time or time to market or best maintainability etc. 
