It’s a method of witnessing, that’s not inherently bad. Handing out tracts can be helpful, as I have known Protestants to be converted by them (and some Catholics converted to Protestantism by them). It would be good if Catholics could adopt and adapt the time-honored American tradition of tract-witnessing for the Church. Tracts can also be an aid to memory, a sort of cheat sheet, when witnessing, the same as one carries a Bible to preach the Gospel.
Chick tracts, however, tend to be rabidly anti-Catholic (like “the death cracker”), and, I think, are King James Only. I’ve still seen some decent information from Chick Publications (as long as the information doesn’t deal with Catholicism), as much as they are hated amongst Catholics. (I’ve also seen some very bad information in them, such as dispensational premillenial pretribulation rapturism, and various other popular Independent Baptist/Fundamentalist hobby-horses.)
They demonstrate a missionary zeal that is admirable, even if their scholarship is not. Any life in Christ - even one in imperfect communion with the Church - is preferable to no life in Christ, yes?
Handing them out to people who are already conservative Christian (e.g. the “five fundamentals”), or even Christian (Nicene Creed), is more gray in morality, though. I can see where they are coming from, as some truly believe that the HolyCatholic Church is the “whore of Babylon”, etc. - it doesn’t make anti-Catholicism correct, but can be an extenuating circumstance in holding it. As I heard one preach, putting up pictures of the Patriarch of Constantinople and the Pope titled “Dumb and Dumber”. It’s certainly not excusable, but is founded in false knowledge - not in malice - in my experience dealing with Independent Baptists.
I believe that’s where the founder of Catholic Answers got his idea to start writing, was to respond to Chick tracts being handed out outside of his church.