Probably true in general. But there are always exceptions. Hard to imagine a tool better than Excel for slot game math calculations. Maybe it can be done?
Calculations for slot machine mechanics and payouts have been in Excel for a long time. There can be a LOT of complexity in these workbooks. Sometimes it’s tricky to debug - but what’s the alternative? Code is often hard to debug too.
Simulating results (Monte Carlo) is nice but having two sets of data for validation/checking against each other is nice.
I am not aware of any alternatives.