What is wrong with this sine memorisation pattern?

You can buy the jacket from the video! Signed by Matt. Or not. You choose. (All money goes to charity. You don't have a choice about that.) https://www.ebay.co.uk/itm/363879463026

Here is the Geobebra file "Trigonometry Tracer" made by Ben Sparks:
https://www.geogebra.org/m/S2W46Thv
Do check out Ben’s channel:    / sparksmaths  

Katie "radians" Steckles is also on YouTube:    / katiesteckles  

And Becky Warren is best found on twitter:   / becky_k_warren  

This is the sort of ridiculous video I can make because I have an army of supporters on Patreon. Join in and be directly responsible for there being more silly maths videos in the world.   / standupmaths  

And fine, here is the link to the original reddit post. But no brigading it or the OP etc. If you visit the page, consider it like visiting a museum. Look, but don't touch.   / isnt_it_awesome_way_to_learn_the_values_to_be  

CORRECTIONS
Nothing yet. Let me know if you spot any mistakes!

Filming and editing by Alex Genn-Bash
Beard styling by Lucie Green
Shunning Drake played by Matt Parker
Embracing Drake played by Matt Parker
Music by Howard Carter
Design by Simon Wright and Adam Robinson
J̸̫̈̉I̸̳̼͊G̵̼̈́ ̴̯͕̄L̵͙̜̎͘I̴̳̫̐V̸͙͐̏Ę̵̛̳̎S̴̢̟͒̅ ̶̛̮O̴͌͘͜N̷͉̬̚