I have G60-15 polyglas on mine, they drive just fine on bias ply tires..
In your case " fine" is a relative term I suppose. To the vast majority of those that have driven on both a different not as favorable term can be substituted. That is OK ,to each their own.
If people are driving around on a worn out frontend or rock hard bias ply's I can see why they have had a bad experience with bias ply tires
I have radials on my boss car and bias on my Shelby (to compare apples to apples - my other cars are not fords) and they don't drive any different if your front end and steering box are not worn out. If you have a beater (which my 70 b2 is) then radials are fine but on a restored car they don't look right, but BFG's are a lot cheaper..
Goodyear bias ply Polyglass tires are very popular cosmetically but functionally if not fully lethal, then semi-lethal. They simply are not capable of enabling these cars to be driven as intended.
Many of us here were driving on these things when new and they were never good even brand new. I was. I'm happy that I survived that era and those tires.
It's a free country and you are certainly free to do what you please. It's your car. Claiming that they are a competent tire won't get you much sympathy here. Many of us know better.
I suppose though that it is the current climate to debate what the meaning of any word actually is? The term alternative facts comes up a lot. I suppose that gets to the basis of even a word like yes. Does it mean yes or something else?
Some are wise enough to realize that the comment, "those that refuse to learn from history are doomed to repeat it" has a very large degree of accuracy.
I put it more simply. Fool me once shame on you. Fool me twice, shame on me. I won't be fooled by those tires again.