Ahhh now I understand Grumpy_Mike and Paul_B 's original points about why multiplexing in this case
makes no sense /is pointless. If I'm merely doing it to lower the current for the sake of the chip,
it visually accomplishes the same thing as simply decreasing the current by adding more resistors to the LEDs. That's why it would be better to just get a better chip to avoid this hassle. And also, even with multiplexing, controlling more than a few LEDs with 1 output without transistors will just sag the voltage.
Ok, I fully understand now, I'll save learning about multiplexing for another project where it makes more sense to do haha.