The significance of submitting a motion of no confidence in the Cabinet

At the end of the Diet session in June 2023, a certain political party submitted a motion of no confidence in the Cabinet, but was this a meaningful action?

As the ruling party, it had no choice but to reject the motion proposed by the opposition, since it was the Cabinet they had chosen.
And it was clear theat rejection was certain given because the ruling party had more than half seats in the House of Representatives.

What was the meaning of submitting a motion of no confidence in the Cabinet in such a situation?

If the motion of no confidence in the Cabinet was rejected by the ruling party, the ruling party would at least lose the justification for dissolving the Diet and would not be able to dissolve it.

This may be a cynical view, but with the ruling party hinting at dissolution and the possibility of a general election, submitting a motion of no confidence in the Cabinet would have been a powerful way to contain the dissolution and guarantee both side thier own status.

Naturally, the motion of no confidence in the Cabinet was rejected, and a general election was not called for, and the positions of the members of both the ruling and opposition parties were guaranteed, resulting in a win-win for both parties.