I can confirm. The one time I had some of the LEDs die is when I tried to hack a fan-less 150 W LED desk lamp together form 9W COBs thermal-epoxied to a trade f

I can confirm. The one time I had some of the LEDs die is when I tried to hack a fan-less 150 W LED desk lamp together form 9W COBs thermal-epoxied to a trade fare showpiece from a Chinese streetlight/factory-downlight company, that they used for 200 W. But I had it upside-down and without a heat spreader layer, which I blame the LED's death on. Other than that, I'm happy with a 100 W, 5 m long, 1800 K, 95 CRI strip with a 15~16 kHz PWM dimmer, and my collection of the high-power remote phosphor bulbs and my share of a box of pseudo-filament bulbs. We're looking at bi-color white+white (flexible CCT) strips on top of the cable trays, illuminating the ceiling, for our renovated hacker space. For reference: YUJI's "normal" "BC" double-phosphor 95 CRI LEDs are about 1 USD/W, sold in packages typically worth 50~150 USD.