Interesting point. I haven't read that but maybe the appropriate approach depends on the situation / level of uncertainty. For example, in situations where we have little clarity on the options or what the outcomes will look like, it perhaps makes sense to resist any urge to take action because we can't make any sensible comparison between the change and the status quo (and 'action bias' may be more of a factor). In other situations, like leaving one job to go to another, we have a better (though definitely imperfect) idea of what the options / outcomes look like and so may be better placed to make a comparison (in which case loss aversion may be more important). This is just a theory though - I may be totally wrong!