Huh. Interesting. I have never heard anyone say "flouting", but I have heard "fl...

Huh. Interesting. I have never heard anyone say "flouting", but I have heard "flaunting" hundreds or thousands of times. Seems the confusion has been common enough for long enough that it's correct now: https://www.merriam-webster.com/dictionary/flaunt

Similar to any word really.. if enough people use it a certain way, then that is the correct way by definition.