Paradigm was a popular buzzword a few years ago. Here’s a bit of the definition from Merriam-Webster.
broadly : a philosophical or theoretical framework of any kind
The dominant paradigm in cycling holds that cyclists are inferior users of the roads, obligated to stay out of the way of more important users, who drive cars.
A simplified analogy for paradigm is a habit of reasoning or, the box in the commonly used phrase “thinking outside the box”.
One might think that “bicycle advocates” would fight this paradigm since it makes cycling unattractive and less safe. Instead, they embrace it, welcoming indeed demanding segregated facilities that banish cyclists to the gutter. Not only do they demand facilities, most of these advocates resist any attempt to apply safety standards to the facilities. They seem to believe it is better to have many such facilities even if they have serious safety standards than to have insist that any such facilities must be safe places to ride.
The photo  shows a bike lane that applies the “Squeeze” to anyone riding there as it tapers to nearly nothing as it pases driveways and approaches an intersection ahead Photo by Bob Bayn, Newburg OR