I do not think wanting Trump prosecuted as a threat to democracy and not wanting to be confrontational are compatible stances.They can want to do it, or think it needs done, and still not go through with it for the reasons I listed earlier. It's not an inconsistent position. Again, I don't agree with it (not doing anything) or advocate for it. I just think that's what's going to end up happening.
It is unlikely, but possible that they decide not to prosecute due to other considerations, but if one of the reasons for you thinking they would not prosecute is a desire not to be confrontational this directly undercuts that idea so it should move the needle at least a little in favor of indictment.