pixelate: No. That is not true at all. There are many Poskim nowadays who strongly disagree with the Chazon Ish (many hold that R’ Shlomo Zalman properly refuted him) and they would not hold of this. Because there is some problem with turning on electricity based on what we know nowadays. It’s a big Machlokes exactly what, but even if you don’t hold of Boneh then it’s still Assur to turn a light on on Yom Tov. R’ Shlomo Zalman and his Talmidim don’t hold that it’s Muttar. By your logic they should.
Also, the Chazon Ish did not hold that the Boneh was because you created a new circuit. That is a massively widespread misunderstanding of the Chazon Ish. See the Tzitz Eliezer who goes out of his way to point this out numerous times, basically in any T’shuvah discussing electricity on Shabbos.