Put plainly if the shoe fits or the label it is a bit silly to get angry at the person who merely observes the obvious & states what is clear.  

Actions which create greater sexism such as greater discrimination displayed thru offering priesthood & a 2nd vocation to men yet conting the unjust bias against women for their 1st vocation is an absolutely obvious action of sexism & that is fact.  It would be the same if you did this using race as the bias for discrimination.  Not liking the label when it fits is not something I can help you with.  

Optional celibacy while women are not being ordained priests will (not maybe will) definitely will cause greater gender segregation.  It will slow down women being ordained because putting married men in these spots will take the pressure off the hierarchy as the desperate need for priests will lessen some. That is common sense.

Christians should be most concerned that labels like racist/sexist don't accurately describe their persona or acts.