You don’t see many Demo’s because Shred is useless.

As someone who plays a lot of Demo, he is by far the most underrated killer in the game IMO, in the top 5-10 range. This would make one of the two most fun killers to go vs pretty horrible, deep wounds are annoying and pretty sleeper, he really doesn't need it either. Shred when you know how to use it (especially with rat liver) is one of the best chase abilities in the game, his portals are super good for pressure too.

Some people will say they are useless cause of noise, but not in my experience aslong as you know how to place them well, either inbetween gens or hidden around corners will give you maximum value. 2s of instant undetectable when used right can be super useful, sadly his extra undetectable addons suck though.