Of course threads drift, and that’s the fun of a forum. However Alec asked a specific question, and in your comment it wasn’t clear that you were drifting (which is of course acceptable) onto a different area. It would be easy for people casually browsing the thread to pick up that language test might ne needed for CdS.
If your OH can mange in day to day life, chat to friends, read the news, watch a TV programme, etc then he should be able to achieve the language test? And if he has problems such as deafness then there is leeway for him to he supported through the spoken interview. The other option is of course for you to apply, and then he can apply once you are French as your spouse where the rules are less strict.
And if you do want to join your family in Germany and get a residence permit even as a european you would have had to have had basic German to same sort of level. Unlike France used to be, you can’t just stay under the radar. So not sure what the difference will be?