Can confirm. Especially wet snow/sleet can make bicycling completely impossible. A few centimeters is only a minor annoyance, but 10 cm is a serious problem. Fortunately, it doesn’t last long where I live, since the streets get cleared fairly quickly. During one of those mornings you better take a bus/train/subway instead. It also really depends on how well your town takes care of the streets and what public transport options are available.