I have read the original post, read other articles covering the program, read through Apple's official text for the program, and read this thread. After doing all of that, I have come to the following conclusions (as I'm sure most of you have as well):
1. Considering this was posted February 2nd, 2018, and considering the iPhone 7 was introduced in September 2016, AND considering the program claims that non-Plus iPhone 7 units (bearing A1660, A1779, and A1780 model numbers) manufactured between September 2016 and February 2018; it's safe to assume that unless something drastic happened in the last three days, all iPhone 7 units (bearing A1660, A1779, and A1780) are at risk for the issue (if not already subject to it).
2. The "small percentage" must be a large number of affected 4.7" iPhone 7 units (bearing those model numbers) for the range of time for production for the iPhones; otherwise Apple wouldn't have made a program, nor specified the entire production/sale period for the 4.7" iPhone 7.
3. Apple has not issued any statement to indicate that, going forward, revised versions of the affected iPhone 7 models won't be sold in lieu of the affected ones.
4. In the US, affected 4.7" iPhones are either the Verizon-locked models, the Sprint-locked models, or the SIM-free models
5. Apple seems deliberate in only covering the 4.7" version of the affected iPhone 7 units and not the 5.5" plus versions. No other 5.5" or 4.7" iPhones seem to be included either.
6. As many of you have pointed out, the modem seems to be the most likely culprit component on the logic board to cause this issue.
Given these conclusions, I have the following questions for Apple (if anyone here has insight, obviously, it would be appreciated):
1. Will Apple put out fixed or revised versions of 4.7" iPhone 7 units (bearing A1660, A1779, and A1780)? Or will this just be one of those buy-at-your-own-risk type of situations until the phone is finally phased out of the lineup?
2. Are ANY of the recently made-available Refurbished 4.7" iPhone 7 phones potentially affected by this issue (and therefore covered by the program)? Which is to say, is this much like the 2008 and 2011 MacBook Pro repair programs where they'd basically replace the phone or the phone's logic board with another phone that will likely have the same issue down the road?
3. Will we likely see a similar program for the iPhone 7 Plus or any other currently-sold iPhone?