The fact that they do it publically shouldn’t make it worse- when women sit in the sukkah or count sefirah publically, is that a terrible misjudgement and chillul hashem, even if they make a “show” of it?
My shailah is, what is the nafka minah of wearing tzitzis and tefillin versus sitting in a sukkah? After all, they are both mitzvos asei shehazman gerama. If women wish to do these kinds of mitzvos, the Rambam says we are not docheh them and let them do it….