Its a relatively minor spending proposal. Something that is probably achievable. I just think its a bit weird to assume that it evidence that Biden can't be trusted when its pretty much standard fare for politicians to promise things.
First of all, note that I didn't say "What should a president do the first few days in office". I asked "How can any president fulfill campaign promises when they don't control the budget directly".
Secondly, I think draining the swamp will be both easier and harder than you think.
Easier, since much of the 'swamp' involves temporary hires that are associated with the administration. Trump's cabinet and various high-level people in the government automatically disappear with the change in government.
Harder, since some of the people Trump has installed (judges) can only be removed through impeachment, which is not an easy solution.
Actually, a lot of the candidates have talked about executive orders to reverse some of Trump's damages...
https://www.politico.com/story/2019/05/04/democrats-executive-orders-2020-1301633
https://www.politico.com/2020-election/candidates-views-on-the-issues/immigration-reform/daca/