Thank you for the post. There is some good information here, however, we need to be careful not to be too general. There are new developments that enable some forms of probiotics to be stable in beverages and other applications and these should not be ignored or dismissed as their is really good science to support them. There is also capsule within a capsule technology that also ensures they get to where they need to go to be the most effective.
A couple of other points:
Many formulas claiming billions of CFU are overkill - we don't need that much.
Multi species formulas also often do not work as species can compete for survival in the gut.