Earlier quoted context omitted.
Here's what the book says, "Sometimes they're called Nazis. Other times, they're the far-right or alt-right. White Nationalists. No matter the name, hateful groups are spewing vile, racist, anti-immigrant, anti-POC, anti-LGBTQ+, anti-anything-but-white-Christian-views ideologies. SCREW THAT. ALWAYS PUNCH NAZIS".
What is your objection to that passage? Most Nazis today do not call themselves "Nazis" because almost everyone agrees the Nazis were the bad guys. That is all that passage is saying. Saying sometimes Nazis go by "the far-right" is not the saying all far-right people are Nazis. You are the one reading "hateful groups are spewing vile, racist, anti-immigrant, anti-POC, anti-LGBTQ+, anti-anything-but-white-Christian-vi…
Given that most conservatives hold positions that are perceived by the nazi punching crowd as one or more of those evil stances above, I feel like the concern is genuine. Emphasis on perceived, because there is a tendency to exaggerate just how "anti" such stances are.