So we need to address ADC items and Caitlyn
If you haven't noticed, Caitlyn is a troubling ADC.
Season 8, she was problematic due to Runaans. Season 9, she is problematic due to Stormrazor.
And her issues repeatedly stem from items. However, Riot likes to nerf champions rather than the item. In this case, the problem is Stormrazor and let me explain why.
We need to address a lot of things in League - such as burst mages overriding tank builds (AP Malphite) because tanks are so unviable. Thanks Riot for "diversity" (diversity has decreased this season).
ADCs should not have any form of CC outside their kits without trading significant damage. A 75% slow is too much and Caitlyn's kit with Fleet Footwork makes her able to disengage most champions easily. If she mispositions, she can fire a Stormrazor enhanced auto and easily reposition from an engaging enemy then burst them down.
Ironically, I say burst because despite the crit rework, ADCs still need so much damage to remain viable. Repeatedly, ADCs have been nerfed due to items that have made them strong where they shouldn't and this is a recurring pattern. Every ADC has had this issue before.
I think Riot has a fear of changing items and it takes huge community pushes to even make them consider single changes. There should be less fear in reevaluating if items are problematic and touching them.