The writing in red is correct. The inequality sign flips when we divide both sides by a negative value.
To see why the sign flips, think of it like this:
[tex]-2|x-3| > 0\\\\-2y > 0\\\\-2y+2y > 0+2y\\\\0y > 2y\\\\0 > 2y\\\\2y < 0\\\\2|x-3| < 0\\\\[/tex]
Where [tex]y = |x-3|[/tex] is used to condense things a bit.
In short, we go from [tex]-2|x-3| > 0\\\\[/tex] to [tex]2|x-3| < 0\\\\[/tex] and we have a sign flip.
The '2' is never negative, and same goes for [tex]|x-3|[/tex]. So overall, the entire left hand side is never negative. So there are no solutions to [tex]2|x-3| < 0[/tex]which further means there are no solutions to [tex]-2|x-3| > 0[/tex]
Put another way, the original inequality has its left side always as some negative number (assuming x is not equal to 3). There's no way to have a negative number larger than 0. So we have a contradiction leading to no solutions.
Answer: There are no solutions