It's all well and good to say that being happy with yourself is what's important, but being recognized as trans usually implies more stress, discrimination, and perhaps even violence.
I do though, think that being attractive doesn't really have anything at all to do with passing. They may become conflated in the trans community, because performatively, they may be identical practices.
Being trans is a social strata, which implies social standing, and I've read studies that say that transwomen that pass are happier, more well adjusted, and experience less stress and depression.
Of course it doesn't help to worry about it a whole bunch, and torture yourself over it, and think that it's everything. I really want to say two things, that passing is important, but only because society is rough on us, and only to the extent it makes us happier, and healthier. If the obsession makes you more depressed, and less healthy, then it is better to strive for whatever contentment you can achieve.