"Brickwall" limiting is about very short-term transient compression; to oversimplify things, those limiters are operating at the timespan of 1-30 milliseconds, more or less.

These edits are a few hundred ms to a few seconds at a time, so it doesn't make sense that Gordon would refer to them as "brickwall".

(Another problem here is that evaluating a mastered waveform's dynamic range by eye is extremely subjective, and I would argue next to useless most of the time. The way these waveforms are shown in the post, we'd be hard-pressed to tell 9db (hyper-compressed) from 14db (pretty good) by eye. Professionals have software and metering to measure this; that's a much better approach.)

Bottom line: do these clumsy edits contribute to brickwalling? Really doesn't look like it, but I don't have the raw files to measure to know for sure. Are the edits good? Not in a million years.