I'm working on my "new" Spanish section. Quite a few similar sentences insisted on "lots" as the correct answer when I wrote "much." I wrote that, and Duo marked it as wrong and wanted "loads" instead! Please!!!
Yes, a language course should teach formal literate sentences, not slovenly ones.
2019-08-22 A mi me gusta Duo. ¡Me encanta Duo!
Also, this is not to be confused with, "The owl wrote in Spanish a lot." The sentence above means that he produced quite a bit of writing in Spanish. Mine means that he wrote mostly in Spanish, although he may not have written much in total at all.
crf: If you really want to learn a language, then using some uncommon, but grammatically correct, sentences should challenge you to think. Whether the boy or a cow writes a letter really shouldn't matter and you learn another Spanish noun!