There are always going to be real bad ones in any series.
I wouldn't judge DS9 by one or two episodes the same way I wouldn't judge TOS by "Spock's Brain"!
BLASPHEMY! You are redeuced two steps in rank. "Spock's Brain" was an incredible allegorical tale. I will admit, 45 years after it first's airing, I still don't know what the allegory or meaning actually was, BUT! I am sure it was wonderful. And fantastic. And, when we, as a people, are ready, a prophet will come amongst us to enlighten the true-believers with understanding and grace.
Can I have an "AMEN!"