I never said an admit was impossible. In fact I encouraged the OP to apply.
That said, I think the OP choosing preferred classes over meeting foreign language recommendations (when higher level foreign language coursework was offered at the HS) may well be a negative. Only admissions knows how the OP’s application will be viewed – and important aspects of their application (ex. essays, LORs) cannot/should not be seen by people on a blog such as this.
As with every applicant, finding great match/safety schools should be an important part of the process.
(If the individual you noted took their chosen foreign language to the highest level offered in their HS, had scheduling issues with other core classes, etc. I don’t expect it would be a negative – either way, good for them.)