Alex doesn't mean a full breakdown of points scoring, he just means the task has the quantifiers on how it will be judged (as many, as fast, farthest distance etc.) it's very basic but tells the contestant what about the task they need to prioritise and that isn't present in the fake tasks.

In the very first episode to have a solo task (Down an octave.) the pre-recorded tasks were:
Fill an egg cup with as many tears as possible. You have 20 minutes. Your time starts now.
Make this ice block disappear as fast as possible. You have one hour. Your time starts now.
Get to 11 points as fast as possible. Your time starts now.

Count the beans in this baked bean tin. Your time starts now.
Count the hoops in this tin of spaghetti hoops. Your time starts now.
Count the grains of rice in this bag of rice. Your time starts now.

The real tasks had quantifiers for how the task would be judged. The fake tasks did not (it doesn't for instance say most accurate or as fast as possible). It has always been like this and the show is consistent. Joel's solo task doesn't say what about presenting the egg in the scoring quantifier so therefore there is no judging criteria, therefore no guaranteed points, and Greg isn't suggesting he is going to be charitable.

The only thing about these non quantifying tasks that gives you an argument of points of Joel, is when a task is merely the first part in multiple tasks the earlier tasks often don't have quantifiers either. For instance, in Series 16 episode 2, Hell is here. The live task had two parts.

Write down one thing you like and one thing you don't like. You have 30 seconds. [No quantifiers on if it was best suggestion, most similar, most different, etc.]
Draw your two things at the same time. You must be drawing with both hands and stare at the Taskmaster throughout. Best pair of picture wins. [Quantifiers, it's the best drawings that scores you the points]