Aye ok... Utter bollocks!
As an advanced driver and someone who's had driving instruction from a number of Lancs police driving instructions and ex-driving instructions, I can tell you now that shit tyres are just that, shit!
Yes; they have to meet certain standards, but that's all they do. Whereas tyres in the next range(s) up excel those standard again & again
I've experienced shit/cheap/budget/ditchfinder tyres on the same car; as brand new (bedded in) tyres, in exactly the same scenario as upper budget, midrange & premium and they were beyond scary how bad they were!
If you want to run them, that's your choice; as with life, it's all about choices... But choices are either right or wrong...