But the question here is not whether giving to charity beats acting romantic to one's partner (Gleb and his wife are obviously being romantic to each other; indeed, they're also choosing to enjoy an experience which will likely make them happier in the long term - dining in a nice cozy restaurant), but whether it's better than buying expensive stuff for themselves.
I don't think that's the question. You aren't constrained to the options of an "expensive" gift (carrying the connotation of low emotional resonance) or a charitable donation. You ...
Harsh, but this does have two HuffPo-like traits: first, he uses his opening line to make a point that's grossly misleading, and repackages his generic pitch for EA as something relevant to an upcoming holiday. "Hey, you know what's the most romantic thing to do? Turns out that it's the same thing we recommend doing all the time. What a coincidence!"
Second, his factoids about the psychology of generosity are as misleading as HuffPo-tier science reporting. Generally speaking, the psych/neuropsych studies I've read don't really support the conclus...
Regarding your first point, which do you suppose is more likely: that love is a bad idea, or that having a very reductionist viewpoint is a bad idea?
Regarding the second, a lot of things are like "the brain chemicals involved in love." (The article only discusses low serotonin levels.) This doesn't provide a basis for thinking love is a bad thing.
Regarding permanence, "is lifelong commitment to a single person a good idea" is a different question from "is love a good idea?" Since you've asked, though, I think I disagree with t...
If the argument being put forward is that it's not good to give terrible romantic gifts (i.e., those that make neither the giver nor the receiver happy), and that, as such, any nonnegative alternative activities--including charitable gifts-- might be better, I find that very difficult to disagree with. Personally, I think that the correct response to that situation is to get better at giving gifts, though.