Not true! An IRCC official in that YouTube video said they anticipate scores to drop to around 400. This was said last summer about 2017. It's not about the score...scores are coming down for 2 reasons:
1. All PR applicants as of 2017 are now fully done through EE. Paper applications are finally done, so draw sizes will go up which means scores will go down.
2. Now that job offers barely get you points (50 vs 600), scores will drop. Human capital (which is out of a maximum 600 points I think) is now valued more proportionately since job offers get you way less.