Yeah my back yard had one of those thorny mongrels and the front had two normal Bradford. I cut them all down.Some states like Georgia has outlawed them and are paying people to remove them. One of the issues with the ornamental pear trees is that they're aren't sterile and cut pollenate with fruiting pears to produce a franken-tree that's not nice to look at, very bushy and has very long thorns.
There's a lot of Bradford here in SC just itching to be cut down.