The "STARTTLS" flag is send plain text with the email header. Removing data that isn't even attempted to be encrypted does not violate DMCA.
On the other hand chargebacks are not that prolific for honest sellers. I've used two in my life and both for cheats.
I used to work for a small retail chain (75 stores) working specifically on the POS system (including CC processing). Chargebacks are a huge issue.
Our staff had to deal with 30-40 chargebacks a month during our busy times. Each of those required at least an hour of research on the transaction, filling out forms and then getting the information back to the credit card processing company. All of which typically resulted in money coming out of our account, even though the customer was in the wrong (Along with other things, we sold monthly subscriptions to our service. A customer would dispute charges because they went to a store that started with the same first 4 letters of our name and didn't recognize the charge.).
Chargebacks cost us 1 employees time for an entire week every single month, and we where an honest retailer (refunds for anything even have way reasonable).
Oh, yeah, this:
In February 2014, Google announced it had "invited cities in nine metro areas around the U.S.—34 cities altogether—to work with us to explore what it would take to bring them Google Fiber."
One shallow, useless promise begets another...
You say "One shallow, useless promise begets another..." but there simply isn't a promise in your quote.
"Never ascribe to malice that which is caused by greed and ignorance." -- Cal Keegan