Problem is that both houses majorities support the lunatic, right now they've more or less given him a blank check to operate.
Historically, the two party system has meant that Congress either votes with the presidents wishes or against when it comes to legislation, but Congress doesn't directly approve/disprove of executive orders. To oppose executive orders, Congress needs to pass laws that override the orders. That wont happen unless the majority becomes convinced they'll lose elections if they keep supporting trump.
It'll be up to the Judicial Branch to directly rule for/against this order. But the judicial branch only truly has power so long as the executive complies. We're close to hitting the test of that power balance on some of his earlier orders.
Fun fact: the law enforcement of the Judicial Branch is technically an agency under the Executive Branch. Not a problem if people are largely operating in good faith with the law, or at least fear repurcussions if they don't comply... But since Trump doesn't fear repurcussion, this fun fact may be the oversight that breaks the consitution.
This isn't exactly the type of work tons of astronomers are doing, nor does it cut into their jobs. Astronomers have already been using ML/algorithms/machine vision/similar stuff like this for this kind of work for years.
Besides, whenever a system identifies objects like this, they still need to be confirmed. This kind of thing just means telescope time is more efficient and it leaves more time for the kinds of projects that normally don't get much telescope time.
Also, space is big. 150k possible objects is NOTHING.