I understand that insulting any prophet is kufr
Additionally, scholars have agreed unanimously that whoever insults, disrespects or belittles any one of the prophets, may Allaah exalt their mention, will be a Kaafir (disbeliever). -Ruling on the one who insulted or belittled a Prophet - IslamWeb
However, it seems to me that Muslims react very strongly when Prophet Muhammad (peace be upon him) is insulted, but don't seem to care much if any other prophet is insulted.
Is it Islamic to react more strongly to insults against Prophet Muhammad (peace be upon him) compared to other prophets?
Also, I understand that if someone insults Prophet Muhammad (peace be upon him) the insulter can be executed (punished with death).
The scholars are unanimously agreed that a Muslim who insults the Prophet (peace and blessings of Allaah be upon him) becomes a kaafir and an apostate who is to be executed. This consensus was narrated by more than one of the scholars, such as Imaam Ishaaq ibn Raahawayh, Ibn al-Mundhir, al-Qaadi ‘Iyaad, al-Khattaabi and others. Al-Saarim al-Maslool, 2/13-16 -Ruling on one who insults the Prophet (peace and blessings of Allaah be upon him) - IslamQA
Is it Islamic to execute people who insult prophets other than Prophet Muhammad (peace be upon him)?
I understand that
To sum up, we prefer our Prophet Muhammad (peace and blessings of Allaah be upon him) over all the other Prophets and over all of mankind, because of the evidence that has been narrated concerning that, whilst also respecting the rights of the other Prophets and Messengers and believing in them and respecting them. - The superiority of the Prophet (peace and blessings of Allaah be upon him) to all of creation - IslamQA
However, I don't understand why execution, punishment and anger should only be when Prophet Muhammad (peace be upon him) is insulted, shouldn't we care when the other Prophets and Messengers are insulted?