What type of non MUSLIM wouldn't be opposed to this
Answer: anyone that has less intelligence than an idiot (Keir Starmer is 1 such super idiot):-
“Kill them [unbelievers] wherever you find them… And fight them until there is no more unbelief and worship is for Allah alone” (Quran 2:191-193).
“Strike off their heads and strike from them every fingertip” (Quran 8:12).
“Allah has purchased from the believers their lives and their properties; in exchange for that they will have Paradise. They fight in the cause of Allah, so they slay and are slain” (Quran 9:111).
“Truly Allah loves those who fight in His cause in battle array…” (Quran 61:4)
“The Messenger of Allah said: I have been commanded to fight against people till they testify that there is no God but Allah, and that Muhammad is the messenger of Allah” (Sahih Muslim 1:33).
"They wish that you should disbelieve as they disbelieve, and then you would be equal; therefore take not to yourselves friends of them, until they emigrate in the way of Allah; then, if they turn their backs, take them, and slay them wherever you find them; take not to yourselves any one of them as friend or helper." (Quran 4:89)
The Prophet said, 'If somebody (a Muslim) discards his religion, kill him." (Bukhari 52:260)