I think it shows his humanity. He has a bad temper, or so it seems, that sometimes overrides his own moral sense and teaching. ''
No temper tantrum in evidence here. Part of the prophet's self-understanding is to mediate a message of divine judgment.
You'd think "God" would be better at checking his feelings and keeping this on point.
You don't seem to grasp the biblical understanding of the limits imposed by Jesus' total humanity:
(1) Consider the pre-Pauline Philippian hymn:
"Though He was of the same essential substance as God, He did not regard equality with God as something to cling to, BUT EMPTIED HIMSELF (Phil. 2:6-7)."
So Jesus temporarily gave up His equality with God by "emptying Himself" of all His divine prerogatives: omnipotence, omniscience, etc.
(2) "We do not have a High Priest (Jesus) who is unable to empathize with our weaknesses, bu one who in every respect has been tested in the same way that we are, yet without sin."
His self-emptying means He was totally human in the sense that He took on all our human limitations. Thus, prior to being empowered hy the Holy Spirit at
His baptism, He performs no miracles. No wonder His family is disillusioned with claims of His miraculous healing powers!
(3) "In the days of His flesh Jesus offered up prayers... with loud cries and tears to the one who was able to save Him from death; and He was heard because of His reverent submission (5:7)."
During His terror at facing His grim unknown future, His prayers are heard, not because He is the Son of God, but because of His reverent submission.
(5) "Although He was a Son, He learned obedience through the things He suffered (5:8)."
So He had to learn obedience through trial and error just like the rest of us. Remember, Jesus felt the need to receive John's baptism of repentance.
(6) "Jesus increased in wisdom... and in divine favor (Luke 2:52)."
The mere fact that Jesus increased in God's favor implies a prior period when He was less in divine favor.
Sin is a condition that separates one from God. Jesus was sinless only in the sense that His essential learning curve never separated Him from God.