I recently started a CISSP course and discovered this. I was so excited to finally be getting into security and the next thing I know I'm 3 hours into recordings about pointless jargon and control taxonomies. I know there is a place for the latter at least, but it isn't something I want to do everyday.
CISSP will have you learn the required strength of a light bulb to light the alley behind the office. OSCP will introduce you to overflowing a buffer and pwning a remote service...