Well the reverse side of the argument is that a professional football club, and one of the established Premier League ones at that, should take the necessary precautions to train on such a surface. That and not play a C team so their fans can make excuses
The Russian league is already timed so it fits with the seasons and the real winter conditions they experience. However there is not much they can do about European club competitions and when they are held

Furthermore I imagine it would be a nightmare to get grass pitches to recover and grow in the short time between the end of winter and the start of the new season