‘If you change the axis then it makes sense’ is not a great argument 🙂 but it does not matter, it is just a joke after all, so let’s not argue. Have a nice day y’all!
That is a common misunderstanding of how learning curves work. A steep learning curve means your skill increases more rapidly with the invested time. That means the subject is easier or more intuitive.
Does this graph mean what it is supposed to mean for the joke to work? The black line means I learn much quicker with less time investment, i.e. it is easier than all the others.
If you are not indimidated by selfhosting, then definitely give Firefly III a try.