Well burning oil is a thing that becomes more and more common in newer engines due to downsizing and under-engineering important small parts like piston-rings... Normally, an engine must use oil as the oil that lubricates the valve seats gets incredibly hot by exhaust gasses of 900 degrees and more, there is always an amount of blow-by, just the question is how high that oil consumption is. I can drive 5000 miles without seeing a difference on the dipstick, with supercars/sporty driving those numbers get higher, so its quite normal for racing engines to burn some oil.
But downsizing isnt an excuse for burning oil, many tuners here tune the Mitsubishi 4G15T engine, a 1,5l engine, to 220hp and more without excessive oil consumption, with factory internals... Its the cheaping out manufacturers and thin oils that make some modern cars burn oil again, VAG being the worst.