As described on the bundle’s page, no Steam keys are included with the purchase of your bundle.
Viewing post in Ukraine Bundle Steam Codes
Two main reasons (and there are others):
- It creates a logistical issue for every participant to provide enough keys for the potentially large amount of buyers that is completely outside of our control (itchio can’t guarantee Steam keys will be available for everyone from all the participants)
- It encourages fraud as there are many people who will try to use stolen credit card information to buy up as many Steam keys as possible for the low bundle price (taking them from legitimate buyers) to resell on third-party marketplaces for profit.