I agree, it's total rubbish having to wade through pages of adverts to get your ticket information.
Another pet hate of mine is websites that use light coloured text so it's impossible to print on a black & white printer.
Some airlines do a good job with a PDF attachment that has all the itinerary, ticket numbers and full fare breakdown on ONE sheet of paper. Wizz, Eurowings, Norwegian and KLM to name a few.
KT