Meh. He's only stating the obvious while missing out the fine detail. The 11 is for the average user/masses. But if you want oled and/or bigger battery you get the Pro Max. He wants the bigger battery so has to pay the premium for it. This was Apples plan, everything is as it should be.
Opinion of the differences become more polarised as Apples prices get higher. Some just don't see the value in buying the top tier iphone when the guts of all 11th gen iPhones are the same. But then some people want the very best Apple brings, materials, battery etc and are willing to spend.
The comments I read daily about OLED being the best thing since sliced bread maybe valid, for some. Some of this group also want to say LCD is now garbage despite only two years ago believing Apple made some of the best on the market (ipads are still LCD, Macbooks are still LCD, iMacs are still LCD). I still think the ipad Pros have the very best screen I've ever seen on a mobile device, they make the Macbook look so average.
Buy whatever works for you. The iphone 11 will be Apples best selling iphone this year. The Pro Max is still the best Apple makes.