Constant off time boost converter has no Right Half Plane Zero?

[treez]

Page 14 of the LM3421 datasheet says that constant off time boost converters have a "right half plane zero".

Surely this is not so?
The RHPZ effect, is where the off-time gets progressively minimised when there is a sudden need for more power throughput....however, in a constant off-time converter, the off-time is fixed, and so cannot get minimised....so how can there be a RHPZ?

LM3421 DATASHEET
https://www.ti.com/lit/ds/symlink/lm3421.pdf

 

[rashid0214]

Please refer to it

 

[treez]

that is indeed a right half plane zero response, phase dropping and gain rising.
I wonder, do you agree that constant off time converters do not have these?