Does marriage make female musicians suck?

I agree with the previous comments.
I'm sure the intention of the question was not mean-spirited.
You provided a very narrow example to support your claim.
How about these?
Sonic Youth
Yo La Tengo
Pussy Galore
Aimee Mann (Aimee's last two independently released albums are amazing)
Ivy
PJ Harvey

I'm sure I'm missing so many more but my point is there are many married musicians, male and female, who are doing great stuff.

My two cents.

indy

absolutely.