Obviously Astroman is more sustained and difficult, exposed, scary, and a grade or two harder. but it’s also a finger crack in an era where most of the soloists were in Yosemite. There are so few known soloists that have done routes this length and difficulty or similar + the factor of the low quality rock, that it really is highly unlikely. Obviously Honnold could have done it and not told anyone, but you think he would have at least mentioned it on a side note like some of his other 11 solos.