Let's be very clear. English people who came to Ireland and took up land and property that the Irish had been evicted from were invaders.
Given the length of time that some of those families have been here, and in the spirit of the Good Friday Agreement they are considered to be a permanent fixture. Though most big up their Irishness now..
Addressing the nuances in posts is ridiculous as it is beyond multifaceted. But yes I do want my country all of my country for the Irish. I am a proud nationalist. Isn't everyone ?
If you are English imagine you now speak french. Your children's education is in french and several millions live there diluting your English heritage with french cultural.
That is where we as an Irish nation are. We have to continually deal with the fairy tales inaccuracies spouted. Alongside with the obligatory attitude that Ireland wouldn't be the country it is today without the "contribution" of the UK.
That may give you some tiny sliver of where the nuances are