That's like saying "wouldn't a car from 1969 be bad" or "wouldn't a sword from 1430 be bad" because they're old?Wouldn't a synthesizer from 1973 be bad? How could it keep up with today's music and create beats in genres like dubstep or trap?
Electronic music in 2016 is pretty complicated.
Not at all! It's not inherently "better" or "worse", but know that a lot of modern sythns are sampling these old ones, so to get the better, original sounds you'll want to go with the vintage ones.