I’m sorry. I’ll have to ask you to reasses your words in light of Catholic teaching.
“It doesn’t matter what the Church taught decades or centuries ago if it’s been superseded in modern times.”
-This suggests the Church is not immutable and also should change in correlation to modern times. This is modernism and should be rejected.
“It doesn’t matter the Church used to bind faithful women to cover their heads at Mass - the Church has now loosed women from this discipline”
-The Church never ‘bound’ this, it encouraged it and STILL ENCOURAGES it in light of her Sacred Tradition.
“It doesn’t matter the Church used to bind the faithful in America to abstain from fish on Fridays - the Church has now loosed the faithful from this discipline.”
-The Friday Penance is STILL in place, but can be replaced with other reparation prayers such as the Our Father.
“It doesn’t matter the Church used to bind the faithful from entering non-Catholic places of worship - the Church has loosed this discipline.”
-The Church never loosed, the Churches administration just doesn’t correct anyone on this topic, like they don’t with a majority of topics.
Lastly, and most importantly, I point out your plethora of “It doesn’t matter”s. This shows a grave indifferentism to the roots of the Church. You really should consult a spiritual director about this problem. I promised to pray for you, and I shall do such! I kindly ask that you also pray for me.