Many are using more internet, because they need to get back to machines in the office, from home. Network traffic isn't all Netflix and YouTube.
we do have a 30 minutes video call each day, and sometimes we share screens to do pair programming.
My wife needs to connect to her desktop at work via VNC, many do the same. Apart from calls my internet usage is low during the day but many are experiencing slow networks and it sucks when your trying to work...