Diversity is the problem here. Kishi could have shown at least one female with a dream more like Shino's or Kiba's. Of course those are logical dreams to have for characters as they are established, but that is the problem. Why not at least showing Tenten achieving her Part I dream of being a strong kunoichi like Tsunade, as shallow as it may be? Why not show, for example, Shizune dreaming of, I dunno, being a top medical ninja? Something even more random that involves no romance?That is not a pattern though. It was just the particular women that the panels showed who just happened to already be in love with someone or obsessed with guys in the cases of Ino and Mei. The Sakura thing was Lee's dream, so that one doesn't actually reflect on Sakura. As for Hinata's dream, you have to remember the reason why she likes Naruto in the first place. She is not having this dream because she is obsessed with guys. She specifically likes Naruto because Naruto has always encouraged her. That is not an obsession with males. That is just a desire to be encouraged (which all humans male or female have). Choji's dream was similar to Lee's in that it doesn't reflect on the woman since it was Choji's dream and his desire for a mate. As for Tsunade, it is not obsessive over guys to want your lover to be alive and living his dream. If I had a girl friend that died without getting to live her dream, my dream would be like Tsunade's too (at least part of the dream would be). Ino and Mei are the only ones who obsessed over guys, and that is just their personality like I said before.
Also, I could reverse your logic against you. By your logic, anyone who is in love with someone or who desires a mate is obsessive over the opposite ***. That includes guys as well. In fact, Lee and Choji's dreams depicted them wanting girls. By your logic, wouldn't that classify as them obsessing over girls? To tell you the truth, it would technically make theirs even more obsessive than Tsunade's since theirs just deal with adolescent crushes and desires while Tsunade's dream portrayed all of the actual tragedy in Tsunade's life and the actual true love that she had for these people. In short, your logic says that love = obsession. This would apply to both guys and girls.
Besides, there are plenty of female characters that have nothing to do with guys. There is Kaguya, Karui, Tenten, Mabui, Shizune, Temari, etc... I know you are probably about to say that most of those girls are hardly relevant, but to be fair there aren't a lot of relevant girls in this manga to begin with. Therefore, we have no other choice but to count these girls.
Conclusion: Your logic says that love = obsession = sexism. Love applies to both genders (both inside of the manga and out. We already saw Lee and Choji's dreams. Let's not even get started on Obito). Therefore with your logic, you must say that Kishi is being sexist towards both guys and girls. If you do not say this, then you are denying instances of male "obsession" for the sole purpose of advocating for females. Of course that in turn would render you as sexist towards males. It is not possible for Kishi to be sexist towards both males and females because then everyone would just be getting normal and equal treatment. Therefore there is no sexism going on here.
Again, Kishi is a lot better than, say, many movie writers who make female characters nothing more than eye candy and shallow love interests, but cases of important female characters thinking of males are more common than their male counterparts thinking of them.