If you use Boost ISP and watching sports on NBCSport it will work fine but watching the same match later on youtube is not. If you sit at CSpire and watch a paid movie on Youtube Red you will get worse experience then if you paid and watched the exact same movie on Netflix. If you sit at GCI and have both Netflix and Amazon Prime then go and unsubscribe your netflix as it will be much worse experience than amazon thanks to your ISP throttling.
This is not small ISP that monitor overall usage and throttle clients based on high usage and hotspots of traffic. The article is not about congestion control but rather marketing choices where one streaming service is favored over the other within the captured market of an ISP customers.