The case of the Zimbabwean schoolgirl being deported at age 18 and dreading what she would face there was important to me.
The threatened deportation of the Australian mother with English husband and children was important to me. etc etc
You asked if this particular case was important to me, and no it is not.
My friend is Hungarian, came as a child in 1956. She went to school, learnt English, worked hard, went to college, got a job, married an Englishman, had children and didn't go on protests.
I would call what he is doing it 'biting the hand that feeds you'.
I would not go to Hungary and start protesting there.
I am sure there is plenty to protest about so perhaps he can carry on when he gets back.