It is not true but it's a trick...
first of all Fumblebairy didn't even posted a screen shot of his/her daily checklist earnings so how can you say it's a Inspect Element Coding like yours ? huh ?
2nd you can check Fumblebairy joined a month before and have earnings over $1,900 so it might be true and yes profile stats can't be faked.
3rd pro taskers are those who complete more then 500 of tasks per day, 100's of tasks can be done easily by any regular tasker