Utterly unnecessary.

The Prophet thanks everyone over the pulpit who worked hard to pull off General Conference because it's impossible for him to say it in person - fine.

A company email recognizes the collaborative good work of a team on a project when the parts and pieces are in different cities or different locations - kosher.

But singling out a single person for public praise screams "look at me", not jutsst "look at him". "My husband is suuuuch a wonderful man and father!" And the unspoken follow on is either the expectation for effusive praise to be re-heaped back your direction (and to your glory) on your day, or it's pandering for the inevitable "You're a wonderful mother, too" or "Because he's so wonderful, you must he as well because you married him" comments that ensue.

Can't you just tell him to his face? If so, why does anyone else need to hear it? Does he really need the fake-friend back patting that FB (and other SM) is built around? If he does need that validation, he's not that great and/or your opinion doesn't matter so much. If he doesn't, then spare him the public plaudits and tell him (or better, show him) how you feel in a more personal way.