Reading third person is confusing?

I just read a book review that just baffled me and I wanted to discuss it. Maybe I'm just ignorant or ableist?? Idk.

So I read a review of a book that said a long the lines of: I felt confused reading this book because it was third person POV and I'm used to first person POV. I felt like I was unable to follow along.

It made me feel so sad and confused. Is reading comprehension really this bad now? I just can't understand how one POV is more confusing than the other. I can understand preferring one over the other, but not being able to read one just blows my mind.

The book this review was about was not a difficult read (to me). It was a pretty straightforward urban fantasy. It wasn't a long (under 200 pages).

I know that first person seems to be the preferred POV these days so I can understand this person not reading many third POV books, but I just don't see how it could be difficult to follow a book because of its POV. Am I missing something? Is first person POV that much easier to follow? Help me understand. If I am coming off as ableist I do apologize