Just got rejected from a job because I was 'too enthusiastic'

Anyway, I just finished my last interview, and I got the rejection call. The same old "you were a very good candidate, but we decided to proceed with someone else." I asked for any feedback, and the hiring manager told me, 'Honestly, your words a few days ago about being 'very enthusiastic to start and hit the ground running" came across to the team as a bit desperate, and that worried them." Seriously? Of course I'm desperate. I'm unemployed and have bills to pay. What do they want me to do, pretend I'm not interested?