I would've agreed to that argument 100% prior to the introduction of Addons page but now since we have it and respectfully Diversion is still an Addon script to the Asuswrt-Merlin so IMHO it belongs in the Addons tab.
@RMerlin adds that page and Addons API for a reason, to give developers a centralized way and page to use for their scripts WebUI but if developers are not going to use it then it seems like a wasted effort. Regarding the 10 page limit, I'm sure it can be increased (he initially started with 6 pages and later on increased it to 10) but if developers will not use it in the fear that the page tabs will run out of space then no one will use it as designed and that page will remain empty.
But in any case, it's just my opinion and in the end, it's your script and you're the big boss here. [emoji16]