Generally, ignorance is nothing. Being completely ignorant on a matter means you have no thoughts or feelings about it whatsoever. That is not bliss. However, if knowing about a matter would be painful, then its ignorance would be more pleasant (in regard to the aforementioned pain).
As a general policy, the way I see it is: If generally there are painful issues, then ignorance can be seen as relative “bliss,” whereas if generally there is happiness, then ignorance couldn’t possibly be seen as better, it could only be assumed less [or at best, equal] in terms of pleasure vs. pain.
[Obviously, ignorance is only bliss {if at all} to the ignorant, which means all these question which preclude ignorance tend to be brain twisting conundrums.]
Finally, in regard to Yiddishkeit, being that it is essentially truth, life, and happiness, and if one truly believes in “kol man deavid rachmana letav avid,” there is no real question, as all [should] agree that ignorance of good is not bliss.