I fully understand your perspective, but a human can most definitely hate another human, and that’s not something anyone can realistically deny.

If one can, in a morally correct manner, hate someone who does evil, like how I hate Hitler for murdering many innocent civilians, I also hate the one who didn’t murder them but fully defends him and his ideology. That doesn’t mean that this hatred will cause me to be unjust or evil to them, as Allah commanded us not to do that, but that doesn’t mean one should love them as if their corrupt beliefs is somehow equal. They are not equal to Hitler, but deserve some level of rebuke. Allaah said about this specifically in the Quraan

لَّا یَنۡهَىٰكُمُ ٱللَّهُ عَنِ ٱلَّذِینَ لَمۡ یُقَـٰتِلُوكُمۡ فِی ٱلدِّینِ وَلَمۡ یُخۡرِجُوكُم مِّن دِیَـٰرِكُمۡ أَن تَبَرُّوهُمۡ وَتُقۡسِطُوۤا۟ إِلَیۡهِمۡۚ إِنَّ ٱللَّهَ یُحِبُّ ٱلۡمُقۡسِطِینَ﴿ ٨ ﴾

and He does not forbid you to deal kindly and justly with anyone who has not fought you for your faith or driven you out of your homes: God loves the just.

Al-Mumtaḥanah, Ayah 8

So Allaah orders being good and just with those who don’t materialise any corruption towards us. But Allah does say in the next verse in regards to those who act on their evil intentions

إِنَّمَا یَنۡهَىٰكُمُ ٱللَّهُ عَنِ ٱلَّذِینَ قَـٰتَلُوكُمۡ فِی ٱلدِّینِ وَأَخۡرَجُوكُم مِّن دِیَـٰرِكُمۡ وَظَـٰهَرُوا۟ عَلَىٰۤ إِخۡرَاجِكُمۡ أَن تَوَلَّوۡهُمۡۚ وَمَن یَتَوَلَّهُمۡ فَأُو۟لَـٰۤىِٕكَ هُمُ ٱلظَّـٰلِمُونَ﴿ ٩ ﴾

But God forbids you to take as allies those who have fought against you for your faith, driven you out of your homes, and helped others to drive you out: any of you who take them as allies will truly be wrongdoers.

Al-Mumtaḥanah, Ayah 9

One clear disclaimer to note, this hatred is for the actions and evil they contain, it doesn’t extend beyond that. So if they stop or change their ways, problem solved. Issue is resolved and not held in perpetuity. 

So the fact they may be “brainwashed” is reason to spend time and effort to educate them. 

The point I took from the video was that some people have held levels of evil that wasn’t previously noticed. I can never be a friend or likes someone who openly defends Israel’s actions to my brothers and sisters. They are my family.