Yes, I think the woman who sent them is definitely onto something!
I'm on for receiving flowers, and have in the past received some from a girlfriend... I DID find it a bit embarrassing at the time, because I received them at work, which was was in a fairly macho environment, but really, my embarrassment is just due to allowing myself to bow to social conditioning around being seen as 'less of a man' by other men. Which highlights to me the need to not give a crap about what other men think, because I do not want to build, or live in, a world of social conditioning!
Why should the appreciation of beauty be restricted to only the female half of the population?
Flowers are beautiful in themselves, and lovely to receive as a gift, and the more we make it acceptable for men to not be ashamed to honestly express how they feel as men perceiving beauty in the world, and accepting it into their lives, not just restricted to beauty in the female form, the more humane a society we create. And w break away from this 'men should hide their feelings' bullshit, which has contributed so much to men feeling isolated and lack of intimacy in relationships.
So say it with me, brothers: I'm a man and I love flowers!