Your point about interest payments on the debt doesn't seem to support the assertion that we should go into more debt. It's not like we have a choice about continuing to make interest payments, which makes it a false comparison.
Regardless, I'm pretty sure the definition of murder doesn't include defunding programs with the knowledge that doing so will lead some people to die. If that were the case, then Joe Biden "murdered" the Americans who were killed by the illegal immigrants whom he willingly let across the border (by not funding ICE or allowing them to do their job). It was obvious that by letting in millions of them, some of them would end up killing people. Would you say he is a murderer too?