>chance of glossy: 5%
>chance of royal: 1%
>max number of dismantle bonus: 3
>average number of URs in a 10-pack: 2.25
>peak player count in recent months: 40k

If every one of those 40k crafted 3 of a UR going from unlimited to banned, that's 120k crafts, that's 6000 glossies and 1200 royals, which converts to 5*6000 + 20*1200 = 54000 bonus UR crafting points after dismantling them after the ban goes into effect.
A 10-pack gives you 2.25 URs on average which means 22.5 UR crafting points on average.
54000/22.5 = 2400 10-packs, and a 10-pack is about 20 USD.

So by doing this >>720501628, Jewnami are saving themselves at most 48k USD from 40k players per UR going from unlimited to banned, and this is assuming they ALL pay for gems (lmao).