Not at all; these guys are just banana plug advocates. I've been using spades on amps and speakers for decades, and I've never had a problem with vibrations loosening the spades. Ever. I use locking bananas occasionally, like on the Audioengine A5+ speakers I'm listening to as I type this, but I like high quality spades better.
What I don't like are bare wire connections, especially with stranded wires. To much chance of a bare strand causing a short, and a well-installed connector, banana or spade, gives a much more positive connection to the terminal.