Wow, thank you for mentioning that. I cannot believe how good the translations are! My native tongue is Dutch and I threw in some (long!) English, French and German texts and honestly, they read like they were written by a native speaker. Hugely impressive.
When someone recommended DeepL to me I almost didn't take it seriously expecting mediocre translations that aren't bad, but hardly usable without heavy editing. However after trying it I'm very impressed with its results and in those cases where you have a better translation in mind the interface offers an easy way to suggest and replace expressions. It's impressive.