When it comes to doing the right thing for the American people, the useless centrists you insist on calling "practical leftists" do nothing and call it incrementalism.
When it comes to selling weapons for genocide, they can't do it fast enough and will fight to keep doing it no matter what it costs the American people.
The country has slid to the right for decades and "practical" do-nothing-but-genocide centrists are enthusiastically complicit.