No. It is not.

If a person is "willing" to be used to allow terrorists commit murder with impunity, they make terrorists of themselves.
In reality of course, the terrorists care not if the human shields are "willing" or not, and in any case, who can give consent on behalf of a child?

In spite of all that, in the last Gaza operation, the IDF achieved less collateral harm than has ever been achieved in urban warfare before.

The six may say that it did not improve Israel's security, and we might believe them, but they were not accusing themselves of terrorism.
They were responding to Palestinian terrorism.