So what this clip shows:
Is that there is no difference in photosynthesis from FR or 400-700nm photons. Adding FR photons into the total count (right chart) just shows the same line as with the usual PAR photons:
View attachment 4581479
After that chart he explains the reason for the increase in growth is shade avoidance. So this infomercial about their new sensor which can detect FR specifically explains that FR is only beneficial for leafy greens and not suited for plants like tomatoes.
FR gives no extra photosynthesis and only induces stem elongation and other shade avoidance systems in the plant.
So from that Apogee FR sensor infomercial one would deduce that adding FR does not help for cannabis.