The study itself looks like it's well done, result is statistically highly significant, but it was still just an internet study where people were self reporting. All you end with is suggestive evidence not be taken too seriously.
And I wonder whether it would largely have been people contemplating a decision because they were dissatisfied/ unhappy with the status quo?
My immediate thought it to Nassim Taleb’s via negativa - not necessarily any more well researched, but the view that in uncertainty do nothing or indeed do less to create a better outcome. That inaction is to be preferred where change and action has no clear benefit.