No, the product is not damaged, but manufacturer specifications often contain several values, e.g. standard nits would be 250 and maximum nits such a product then reaches 350. However, there are also screens that will only reach such high brightness in HDR mode. Descriptions are also often simply copied with little love for reality, you sometimes find this on websites, so it is always advisable to do an internet search with the model name and see what you get from the manufacturer. Digitec is nice for low prices, but the shop is not so great for technical specifications, unfortunately there is a lot of room for improvement.