Yes, though the intelligence of criminals varies wildly. One person might organize drug deals over speakerphone in a Starbucks while another might torrent movies only over a clean laptop connected to a public access point with a long-range wifi antenna.

How many of these sophisticated and non-lazy criminals are there?

If you have a lot of sophisticated and non-lazy criminals, my guess is that there is something very wrong. I'd like to know more about these characters and what kinds of crimes they are committing.

If a criminal is that unsophisticated, there should be other ways to catch them? Mind you, there are better ways to tackle drugs than a Law & Order approach.