The problem with a quick search is that you can find almost anything. You need to use curated sites if you are going to try and win a argument, especially about definitions. You've chosen a journalist's site and a blog on a random dive shop in Canada to "prove" the flutter kick and the scissors kick are the same. The problem is, the term have gotten muddied with fitness routines that use the two terms interchangeably.A quick search reveals...
Go find a site that is reputable, is about swimming, and about the teaching of swimming. For example:
Flutter Kick Vs. Scissor Kick in Swimming
Flutter Kick Vs. Scissor Kick in Swimming. Swimming is a low-impact aerobic activity that provides a total body cardiovascular workout. When you're swimming, you use every large muscle group at the same time. To swim efficiently or in competition, it's important to coordinate your stroke with...
woman.thenest.com
Step #6: Low-Profile Scissor Kick | GoSwim
Now that you’ve learned how to get balanced on your back and on your side using the flutter kick, it’s time to learn the scissor kick, which is the type of kick curr
www.goswim.tv
What Is the Scissor Kick in Swimming?
The scissor kick is a lower-body movement that helps propel swimmers through the water. It is easy for beginners to learn because it requires only a simple opening and closing of your straightened legs to provide forward momentum. Used in combination with synchronized arm movements, the scissor...
www.sportsrec.com
A Handy Visual Guide: Flutter Kick Vs. Scissor Kick
In order to swim in an efficient manner or while doing light exercises, it is required that you coordinate your stroke with a suitable kick. While some strokes make use of a flutter kick, only one employs the scissor kick. FitnessVigil discusses both these techniques in detail.
fitnessvigil.com
The two kicks are NOT the same.