Yes, the earlier Tintin comics, (like Tintin in Congo, which I don't think is published any more), are quite blatant in its colonial stereotypes. But to his credit Herge did change his world views (and that of Tintin), to become more "multicultural", when he became friends with a chinese artist and sculptor. (See: Tintin, Hergé and Chang – A Friendship That Changed the World - https://thewire.in/books/tintin-herge-and-chang-a-friendship... and the HN discussion on this - https://news.ycombinator.com/item?id=36468028 ).

> When Hergé published this comic book, he was only 23 years old and wrote it as part of government-led initiative to encourage Belgians to take up commissions in Congo ... Later on his life, Hergé would say: "For the Congo as with Tintin in the Land of the Soviets, the fact was that I was fed on the prejudices of the bourgeois society in which I moved ... It was 1930. I only knew things about these countries that people said at the time: 'Africans were great big children ... Thank goodness for them that we were there!' Etc. And I portrayed these Africans according to such criteria, in the purely paternalistic spirit which existed then in Belgium".

See: Tintin In The Congo, by Hergé (Georges Remi) - https://archive.org/details/tintin-in-the-congo-herge-george...