We are building a new site in Magento 2.4.1 and its expected to launch on Feb 2021, the MSI feature is not needed for this project. So we planning to disable all the MSI modules, will this cause any issue in the future? Also in the devdocs it is mentioned that the "Inventory Management deprecates ScalableInventory and CatalogInventory modules" (https://devdocs.magento.com/guides/v2.4/inventory/inventory-api-reference.html). Please advise.
If you plan to disable all the MSI modules, I will suggest doing it from the command line by running this command in the Magento root. Another way is to disable the MSI using the command line by disabling its separate modules. You can find detail on https://magento.stackexchang./questions/273156/how-to-disable-the-msi-in-magento-2-3