good enough to run twice
Good enough to 
twice (actually three times because I hearted your reference to the previous post).
If it works, it works I guess, no need to reinvent.
I did a pricing spreadsheet in Excel for pricing group benefits. Group underwriting was still using it about 15 years later (and may still be to this day). And when I was working as an actuarial student, at year end we had monstrosities of excel spreadsheets where much of my task was to simply dump in data at year end. I’ve no idea how long those sheets had been around, but likely many years.
It works, until it doesn’t work, usually because someone changed something they thought was minor but was actually critical.
Excel is very powerful, and very very poorly controlled.
Lol
It is just like this, though to be fair if you asked a series of amateurs to stick a long and convoluted model into any software, the result would be about the same.