A point of clarification: in spite of the name, DOGE is not actually a department; it is a commission. It has a specific task (identify areas of wasteful spending in government) a time period (18 months) and a specific outcome (a report). It does not --and will not-- implement any changes itself, since it does not have the power to do so.
I cringe when newspeople and commentators talk about what DOGE is going to do, as if it has any power to make policy changes or strike out even a single budgetary line item. It does not. It will give the President a list of things that he may choose to target, and probably some recommendations. That's it. Also, when given this list, Trump will not be able to simply scratch off items and terminate the funding for them with a stroke of a pen. I realize that people are panicking right now about Trump naming himself King of the Universe, but Congress still runs things in the USA, and Republicans in the House and Senate are not all aligned with Trump's plans.
It's similar with Social Security. Stated plans are all well and good, but actually getting something done requires more than a sternly-written letter from the President.