Unless you are aware of and understand the demanding standards required on runway surfaces , it would be wise to desist from comment about the snow clearing operations. ICAO, EASA, the CAA, not to mention the operators etc require surfaces to be pretty much clear of ALL contaminants.......snow [wet & dry], slush, ice, water [more than 3mm].
A few more facts. Dealing with the elements is not easy. Snow clearing & de-icing equipment is extremely expensive. Additional staff required to operate the above equipment are costly to provide. People expect a magic wand to be waved and everything to operate on time. The comments of the Canadian pax. mentioned above should be noted.
Helen