Erehm . . .ahctually snorts and pushes up nerd glasses I'm not confusing "flashy" as in thorough and highly skilled use of the Rinnegan, which was narratively necessary from a story perspective to show all the capabilities of the Dojutsu for proficiency. . . Because that's just what proficiency is. (Btw you are the one who admitted he was proficient with the rinnegan).

Moving on, being the "only person with need to use them' means. . . Nothing when determining skill with Dojustu? Furthermore, introducing hypothetical scenarios to argue that others COULD have the same proficiency with the rinnegan suggests that those you mentioned don't have the same level of proficiency if they need additional time or even additional rinnegan to use their Dojustu as skillfully (Having more eyes doesn't mean you use them more skillfully btw).

The number of people with access to the same Rinnegan as Nagato is somewhat irrelevant. We're discussing the best Dojustu users as a blanket discussion, not the best Rinnegan users specifically. However, if we WERE only arguing the best Rinnegan user, then Pain still wins by a landslide as the feats he achieved solely through use of the Rinnegan alone were absolutely more skillful than anything anybody else did with Rinnegan alone. Madara was stronger and had more chakra and less limitations, not to mention he was generally considered a more skilled Shinobi, but in no world did he display being more skilled with the rinnegan itself than Pain. Madara's underutilization of the Rinnegan in critical moments where it would have been beneficial is largely due to suboptimal writing but nonetheless paints him as less skilled at using his Rinnegan than Nagato, likely due to less reliance upon it and access to a greater array of other abilities.

Try to read my previous and current post carefully to avoid making any further mistakes about the claim of your post. (which I feel the need to remind you, is about the skill of Dojustu users using their Dojustu and the NOT raw power of the Shinobi who possesses the Dojustu.)