This is undeniably more symbolic than anything, and an attempt to hold Gabbard's feet to the fire. The Hawaiian left seems to be
particularly left-leaning and is no doubt posturing.
Can someone explain Tulsi Gabbard to me? From what I can see, she's not very bright, she's not well-educated, she has some ethical issues, and her positions on issues are mainstream Democrat + a little CTism (like with Assad). So why does the right and many on the further left seem to be so smitten? Just because she's moderately attractive?
I think it's more simple than you're presuming. Most people do not have your level of exposure to political goings on, and are most captivated by the horse race of presidential elections. During the 2016 DNC Primary, which was particularly meaningful and personal for persons in the Sanders camp, she was the first major politician who wasn't a core member of the Sanders camp to cross the establishment line and take a principled stance against the baldly obstructive and unproductive actions by the DNC up to that point and resign from the committee. However political or potential self-serving that move may have been, it took a lot of guts and endeared her to persons (left and right) who had grown to become appalled by the DNC machinery.
Also, I think the "conspiracy theorists" like
@VivaRevolution re Assad's use of chemical weapons have a glaringly reasonable basis to be suspicious of the Western narrative on the issue, and I furthermore don't have any personal problems with Gabbard's meeting with Assad. It is infinitely less gross to me than the standard US foreign policy stance of finger waving at governments like Iran, Cuba, and Venezuela while giving Eskimo kisses to Saudi Arabia, a country that is less free, less benevolent, and less justifiable in its actions than the other three combined. Beyond that, Gabbard (being a former servicewoman) has a history of being somewhat hawkish: I much prefer being potentially misguided or conspiracy-theoretical in the name of peace than being indignantly supportive of a mainstream narrative that encourages intervention and being intolerant of dissent, which is the position of most others in Congress.
Also, you're continually needlessly critical of Gabbard. She's no less intelligent or less ethical than the average Democratic Congressperson (and is considerably
more intelligent/ethical than the average GOP congressperson). I don't know if its leftover sourness from the primary or what, but it's strange. Gabbard is unspectacular, but hardly incompetent.
As far as the
right-wing support of her, there are at least three reasons: (1) she was against TPP, which was a position of the center-far left and has since gained traction on the nationalist right, due entirely to the rise of Trump and not really being rooted in any actual knowledge or principle, (2) she has recently been reluctant to fall in line on foreign policy aims, particularly ones that are lacking in proven justification, which also has momentum on the right, and (3) yes, she's undeniably a beautiful woman.