Its harder for them to screw up a simple usb li-ion charger. Chip, 2 caps, 3 resistors, 2 leds. Though of course they will still try.
and the complaint of slow charge rates. Looks as many want fast hobby charger rates with cheap light weight 4 bay chargers? I like to charge at slower cooler rates, but that’s me. On the other hand I have uses that really slam the discharge rates which we know is not nice to LiIo or LiPo.