From the above article:

Attacks on electricity networks affect the civilian population. Hospitals are hard to run without electricity. Lives are endangered. Both , the Obama and the Trump administration, rejected international attempts to ban cyberattacks that "indiscriminate or systemic harm to individuals and critical infrastructure":

All members of the European Union signed the agreement. Australia and Turkey joined the United States in declining. Israel, which along with the United States conducted the most sophisticated cyberattack in history, the Stuxnet attack on Iran’s nuclear enrichment program, also declined to sign. The U.S. also rejected an agreement that would ban cyber manipulation of elections. The given reasons are of interest:

The United States has interfered in foreign elections before, including Italy in the 1940s and Iran and Latin America in the 1950s and 1960s, and some officials say that no American president should be forced to give up that tool if it could prevent a war. Similarly, the Pentagon worries about commitments to avoid using cyberattacks as a prelude to military action. The United States had a secret program, code-named “Nitro Zeus,” which called for turning off the power grid in much of Iran if the two countries had found themselves in a conflict over Iran’s nuclear program. Such a use of cyber weapons is now a key element in war planning by all of the major world powers . .