I don't understand these direct AC drivers: https://www.electronicsweekly.com/news/why-not-direct-ac-drive-your-led-string-2016-04/ https://www.electronicsweek

I don't understand these direct AC drivers: https://www.electronicsweekly.com/news/why-not-direct-ac-drive-your-led-string-2016-04/ https://www.electronicsweekly.com/news/why-not-direct-ac-dri... They activate 1-4 LEDs in series depending on where in the half wave of the 120V AC we are. That's understandable, but I don't get how about 60V is okay for one LED? One LED has a forward current of max. 3V, doesn't it? By partitioning the up to 120V into 4 phases, it does not cover a mere 4 LEDs in series. Do they have to put 15 in series for the first section in the schematics and another 15 for the thign called "LED 2", etc.? Are there LEDs with forward currents of 60V available?