Dashboard cost basis

On the Dashboard the tooltip in cost basis says “…is not the total fiat you have spent on crypto”, this is not clear to me, what is this supposed to mean? If it’s not the total amount why should I care?, and what would then the total amount include more and why is the total amount not being shown instead?

If you are realizing gains on crypto to crypto trades then the cost basis changes every time you make a crypto to crypto trade. Ex. you can spend 20 USD to buy 1 LTC then sell that LTC for 100 XLM (at market price of $100). This would result in a cost basis of $100 even though you only spent a total of $20 on your crypto. We will be showing the actual fiat spent as well soon.