Are you referring to the legal or the moral aspects?

As far as the legal issue goes, the relevant question is whether attempting something should be culpable and to what extent. One coult adopt one of three possible paths:

1. Attempts are not blameworthy, for they don't have consequences in the real world.
2. Attempts are just as bad as successes - the only thing that makes the difference, the actual outcome, is often a matter of chance.
3. The compromise path: attempts are seen as offenses, but not as bad as successes.

The Israeli law walks the third path. Attempting to stick false charges on someone is an offense, but would lead to half the maximum punishment awarded for the completed offense.

This is as far as legal proceedings go. As far as ethics and morality go? something doesn't have to be illegal to be deemed as disappointing or even repulsive behavior, as in this case.