The UK’s Government Digital Service is similar. They’ve got some good examples of doing unglamorous but impactful work -e.g. replacing dozens of different payment processing systems with one quality one, the same thing for sending physical letters, etc.
I also don’t buy Elon’s messaging that a database upgrade will save social security, or whatever.
One of the best examples of this is passport renewal. In the US until very recently you were unable to do this online, either having to print and mail in a form or go in person to an office.
Another example is the work of 18F to allow Americans easy direct filing of their taxes without the need (or cost) of a third party.
It is and was a pretty significant one, now less important compared to a literal seig-heiling nazi running the government.
Last time literal seig-heiling nazis ran a government, it wasn't great.