From the article.
"...
The code warns ‘Apps may run faster, but battery life may decrease and fan noise may increase.’ ..."
Battery life on a Mac Pro? Probably not applicable. Indeed later in article.
"...
The new Pro Mode is expected to roll out to Apple’s high-end 16-inch MacBook Pro, but could come to other devices if it proves successful. ..."
The Mac Pro is present in this article primarily as just misdirection after there is nothing else to discussion with the click back grabbing headline. They aren't coupled in any significant way. The Mac Pro enclosure has no where even remotely near the thermal constraint interaction problems that the MBP 16" has with the CPU and GPU options.
The common configurations of the Mac Pro probably overspec on Thermal load capacity; not under speced. (e.g., 8-16 cores CPU and 5700 ( with full MPX module cooler or 580X/5500W with 'half' cooler at much lower thresholds ) aren't a problem even under full load for extended periods of time.