That the attacks are unjustified is arguable. The problem is not the attacks on them, but the politics. If Europe is still consuming fossil fuels they could still produce them and source it elsewhere and not buy it from Russia.

In addition, without renewables, the situation would be similar as Europe would still have near 100% fossil fuel energy production (except France).

Nuclear could potentially have changed things, but that's not related to the attack of fossil fuels. That's again politics and perception.

I agree than many times the "greens" cause more trouble than solutions, and that, again, is politics.