Spin classes are what they are and they apparently work for a lot of people. They are not bicycling and really have nothing to do with bicycling except that the machines have some similar parts.
The article linked in the op has literally nothing to do with bicycling, and no one is going to discuss the patents issues raised in the case in this forum.
Do we really need a thread about whether or not other people should like what they like? How is "how much should you pay for a red knob" a subject people on a bicycling forum should have anything interesting to say?