My DD's school offers cross stitch as an extra curricular activity for my DD's year (year 3 equivalent) and the year above. The teacher who runs cross stitch club was touting her wares in the classroom at the beginning of the week and DD came home wildly excited about this activity. Fine, because it's on a Monday, is pretty low key and won't tire her, and it's a nice artistic activity and a good introduction to sewing.
I was a bit stunned at the reaction of many of DD's friends' parents, who are dead against this activity on feminist grounds. WTF? The club is open to all, boys and girls, and is for 6 and 7 year olds.
YANBU - there's nothing "anti-feminist" about things like cross-stitch . It would only be a problem if you decided all girls ought to do cross-stitch, or if the school gave girls crossstitch while the boys did extra maths!
When I was in my final year in primary school all the girls did cross stitch on a Friday afternoon while the boys played football outside! I loved it - I still have the things that I made and it's one of the few hobbies I ever stuck with - still do it now and find it really relaxing. I'm so glad my mum decided against going into school to demand we girls were 'allowed' to do football instead. I hope your daughter enjoys it.
Cross stitching hones counting skills and improves fine motor skills. When your daughter and some of the boys in the class all have superb motor skills and become concert pianists with degrees in maths, they'll be sorryfor the rubbish they're spouting!