Bullshit. If you can get a working script, you shouldn't develop it for yourself. You can always adapt it in that way you need it, but developing it from scratch is like reinventing the wheel.
xfs is not perfect, but it works... If you want to start a new site, just compare the available solutions, check how much you need to invest to adapt it for your purpose and then decide if it's better to get a completely custom script than a working solution where you don't need to handle all basic testing because it is already done.