Frankfurt DE-CIX has long been the busiest Internet exchange, but Sao Paulo is the first to reach 10 terabits of traffic. I shouldn't have been surprised. 2/3rds of the Internet is in the global South. Brazil is building fiber faster than the U.S. (So are France and Spain. The U.S. fiber record is dismal, perhaps because gigabit cable reaches ~90% of the country.)
In Frankfurt, traffic is down from the April-May COVID peak. (Chart below.) Traffic in March peaked around 8 terabits, then went up to 9 in May. August peaks were down to about 8.5 terabits, about where they would be with normal traffic growth since 2019.
Scare stories and cheap headlines spread panic, but actually nearly all networks in the developed world handled the traffic without major problems. Cable upstream occasionally hit minor congestion. The cable companies have been holding back on upstream improvements for 5 years, expecting Full Duplex to cheaply raise upstream bandwidth around now. The technology is barely out of the labs, however, and the costs are higher than expected.