Streaming throttling

Going to a Telus store was actually kinda funny - I showed the issue to the employees there, and they didn't believe it at first, thought something was wrong with my device, so they decided to check it on their phones - and guess what, they were also throttled! 1080p or above streaming just doesn't work. As it doesn't for everyone else on Telus network that I asked to check this issue. And then I showed them that with VPN I can easily stream anything in 4K - which just proves beyond reasonable doubt that Telus does throttle. They were surprised but what can they do, they still have to sell people these 5G+ unlimited plan with "blazing fast data" that only allow streaming up to 1080p at best, realistically it's just 480p/720p though.