I have no doubt that Jehovah has been working and continues to work in many ways (John 5:17). Jehovah's eyes probe the entire earth in order that he may show his strength in behalf of those whose hearts are complete toward him (2 Chronicles 16:9; John 4:23-24). Was God's blinding of the Gestapo [in modern times] a miracle? Maybe it was. There are some complexities that I do not wish to discuss here. Suffice it to say that I wonder whether the term "miracle" adequately describes God's actions toward the Gestapo.
Friend: "The preaching work is to my mind the best example. It cannot be done without God's Spirit motivating, directing, sometimes even protecting, etc those who do the work. It is not in our own "strength" that we do it."
I have no disagreements with what you say here. It just seems that the FDS [faithful and discreet slave] does not think "miracle" is the best term to describe the work that Jehovah God is doing today. Maybe you've read something different in our literature. But it seems that "miracle" is restricted to divine acts that excite wonder or amazement, acts that cannot be explained simply by the laws of nature or human power.
Addendum: Some years ago, one WT publication did use "miracle" in a looser sense to describe the invention of modern technology and new developments of the contemporary era. But such miracles would not be directly attributable to God like healing or speaking in tongues would be.