That guy has a ton of interesting videos on his YouTube channel (https://www.youtube.com/@TechnologyConnections)
He has a quirky (snarky) delivery, but I find him quite entertaining!
My NOCO Genius 10 charge-level LEDs take a few seconds to progress to the next level. For example, when the charger is first plugged in, the 25% LED pulses for 5-10 seconds, then the 50% LED pulses for about the same amount of time, etc. Perhaps you didn't look at the LED status levels long...