"Recently, they came and installed a signal booster when I complained about losing TiVo services and a flaky network connection, and upgraded my router at the same time free of charge."
Let me guess, from a Superhub2AC to a Superhub3?
They're trying to claw back as many SH2AC units as they can to keep a hardcore band of complainers happy. If you read the community forums, there's some issues with SH3s - low WiFi speeds mainly, affecting people who use the 200Mb/sec service to the full extent.
It seems to be if you shout loud enough and often enough, an engineer will "miraculously" have a SH2AC on his van and he'll swap it. Anything that gets sent out from the warehouse is a SH3 though.
To keep stocks up, reading between the lines engineers are encouraged to upgrade to a SH3 whenever possible even if it's not the cause of the issue.