It's a nice thesis but I disagree. Yes, the complexity of English is distributed in other places rather than in an exaggerated number of cases or multiple verba

It's a nice thesis but I disagree. Yes, the complexity of English is distributed in other places rather than in an exaggerated number of cases or multiple verbal conjugations. But it is still easier than Mandarin or Hungarian (especially for speakers of PIE originated languages ;) ). If you have languages that have "standardized teaching" you'll see that it takes a much longer time to go from A to B level in German than in French for example. See this (scroll down) https://www.mustgo.com/worldlanguages/language-difficulty/ https://www.mustgo.com/worldlanguages/language-difficulty/ Note that this difficulty is "kinda" reciprocal (not 100% because English is easy to a German speaker but not vice versa), you could have a different index for native Chinese speakers for example, but I'd bet English would be one of the easiest even then. Sure, English has historical advantages, before that it was French and then Latin and people dealt with those in some way, so you have a point (access to a language plays much more on the ability to learn than grammar for sure).