One thing we seem to do here is frequently run an analysis on our financial situation to make sure things are running as planned. I suspect that many of us lean in the direction and tools like FireCalc make it easy and conventient to do.
But, do you find yourself over analyzing things in other parts of your life? Expecially those parts of life that aren't 'data driven' like relationships, wants and desires?
There are more people on this forum that tend to share certain personality traits (including overanalyzing things, whether finance or not), compared to the population as a whole. While it's certainly not required to reach FI, it can help more than it can hurt it. As such, if you were to poll 10,000 people at large and ask them about overanalyzing things (financial or otherwise), you'll get a much smaller % compared to asking the same question of this forum's members.
Because it's second nature, people like us that ("over")analyze things don't really consider it excessive - we merely view it as analyzing things, period. To the fly-by-the-seat-of-your-pants, average person that splurges on their every whim, our depth of analysis (or, perhaps, ANY level of analysis) would drive them crazy, be it boring, information overload, or simply over their head and impossible for them to understand.
When the OP talks about analyzing relationships (for example), they aren't referring to doing a 'numerical analysis', but (I believe) getting down to the basic human traits/habits/personalities that drive people to act the way they do; to understand and predict what causes certain people to act in certain ways (for example).
Or analyzing which watermelon is the sweetest at the produce stand, etc.
Or perhaps the OP is simply referring to analysis paralysis. In which case, my own excessive analysis of their post on overanalysis is sufficient to diagnose me of a similar condition.