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Good. It is documented. Take a TPIC6595 and you can run it from about any controller.
What do I do with the "GREED" connector though?
Pull a Mangione?
ELI5 what the TPIC6595 does for you? This guide suggests you just need 3 transistors to go with your microcontroller.
That is another way. Having a shift register allows you to have quite a lot of strips connected to your chip, for the "cost" of three pins in total, more or less regardless of how many different strips you want to drive.
If you only want to drive one strip, though, a suitable transistor/MOSFET is a better choice, as you can adapt the schematics to your power requirements.
And make sure you connect the mosfet the right way so it doesn't "kinda" work and make you think your code is bad. Not that anyone has ever done that ever.
With a 30A mosfet under load, you'll soon notice, I'm sure.