Essentially, the argument against the calc is the severe lack of feats towards anything this high in regard to Dragon Ball Super feats.
Those for are commenting on the fact that this speed chain, (except for Super Saiyan Rosé), are all accepted multipliers for the verse and are accounting for things the profiles within the verse don’t attempt to quantify even through we have solid estimates of how powerful/fast/etc. the characters are in verse.
The Super Saiyan Rosé argument essentially boils down to how the individual interprets Super Saiyan Rosé. SSR is explicitly told to us via promotional poster to be “Goku Black’s Super Saiyan,” however MULTIPLE SOURCES, including Akira Toriyama, his CREATOR, claim otherwise, and state Goku Black can achieve both normal SSJ and SSR, which is CLEARLY DEMONSTRATED in the manga. However, since the anime and manga ARE different continuities, some want to utilize SSR as a SSJ multiplier instead of whatever conjecture SSB must be, since SSR has no in-verse explanation in the anime.
Another debate is Saiyan Beyond God-A “Form,” that utilizes the power of Super Saiyan God without transforming, (similar to what Goku did with SSJ in that filler episode Pikkon and Goku work together, where Goku’s hair spikes up and he demonstrates a golden aura without actually turning SSJ), and whether or not this form is real and explains SSR.
The Gogeta scaling is just causation against attempting to scale these characters to these feats, (Broly and Gogeta, and characters around that level, GoDs), since we haven’t finished the Gogeta scaling thread of anything of the like yet.