>>14352057Most of his works are not very complex at all. He was very good at manipulating sums and that is what 99% of his works are about.
He also established many low hanging fruits such as the Euler Characteristic which doesn't require a very complex or abstract foundation .
Understanding something that is already based on a high level of abstraction is much more difficult than "just being lucky" and getting some nice identities and shit.
Almost everybody can understand what Euler did in almost all of his works.
As I said, the reason why you think he has that many great achievements, is because "great achievement" means whatever normies are able to follow and impresses them. It just so happens that being good at connecting and manipulating sums is one of the most impressive things to normies, because it allows you to "magically" connect different identities.