Hahah that's pretty cool, I haven't played geometry dash in almost a year, I learned how to code and drifted away. I remember your levels though and thinking back now you were literally programming within a geometry dash level. I love seeing how some games unintentionally become turing complete.
Yeah GD was a good time, It helped me learn about game design actually, so I can't be thankful enough!
Also yeah, GD is pretty crazy on that aspect, I've rarely seen a level editor go that far in term of possibilities and customisations, usually it's either you can do lots of stuff gameplay wise (minecraft), or you can do lots of stuff art wise (little big planets I believe) but GD mixes both!