Russia is more than capable of butchering european civilian populations, that is the main concern.
everyone knows they'd get their shit rocked in conventional war, its the mass murder of civilians, bombardment of cities, and retaliatiory table flipping ragequit nuclear attacks that everyone is afraid of.
fighting a conventional war, yeah they're a joke.
but they are more than capable of butchering european civilian populations, bombarding cities, and if need be, flipping the table in a rage and launching, after they panic when their conventional forces are defeated.
you dont need a sophisticated army to commit mass murder and destruction. the concern isn't about preventing european militaries from being outmanuevered, surrounded and killed. its about preventing the russians from tiny breakthroughs that result in things like Bucha or Mariupol, where a city is burned to the ground, where a town has hundreds of innocent people executed.