True, true.
I THINK, though, that I am reacting to the way the question was asked. "How valuable is it to learn of other faiths?"
For instance, I can think...and do think...that it would be extremely valuable to learn about the way the stock market works, or the way the old masters mixed tempura paints, or the different methods different cultures use to make pasta, or what modern medical science is doing with CAR T therapies for cancer.
I personally might not have time to learn all of these things, but by my choice I am saying that the things I choose not to learn are 'not valuable, ' at least to me.
..................and in terms of learning about the religions other people believe in, saying that learning about them is 'marginally' valuable, I'm saying that they don't matter as much as, say...mowing my lawn or washing the dishes or making a presentation to my colleagues about a proposed advertising campaign for dog food.
Now, those who do believe that learning about other people's religious beliefs is only marginally valuable are usually saying that they are too busy...
But people who post to religious debate forums that discuss other people's religious ideas probably shouldn't say they don't have the time to learn about them, or that it isn't valuable to them to learn about them.
Just sayin'.