Earlier quoted context omitted.
I don't entirely disagree but I think a slightly better framing is: It's not their fault, but it is their responsibility. Putin is a problem for the world, and it's a problem that can only be properly solved by the Russian people. Unfortunately, that means whether they deserve it or not, they are the group to whom pressure needs to be applied.
I am a Russian citizen. How it is my responsibility? I never supported Putin and hate him as much as anyone. They destroyed Moscow over the last 20 years, gave up on Russians left in former ex-USSR countries, created a separate society of asian immigrants, muted all opposition. How am I responsible? Should I buy a tank of gazoline and go burn Kremlin? Then what? Is every european responsible for not stopping NATO in…
Honestly, yes. If that's what it takes. You're responsible not because it's your fault, but because you (collectively) are the ones in a position to do something about it.