You're merging posts now. In response to your OP, and defending my reply:
(1) Claiming FFXIV's inventory situation gets worse by the update is ridiculous, and a clear, objective exaggeration. If you cannot see that, you're way too emotionally invested in your position right now.
(2) Claiming SE is pursuing an especially bloated approach to inventory is also ridiculous, and a clear, objective exaggeration. Since Stormblood released, we've seen a new storage tab, new Glamour-specific storage, a streamlining of the Glamour Prisms, an order of magnitude increase in stack size, and the conversion of Beast Tribe items to a new currency tab. Clearly they're making efforts, the dozen Sigmascape items notwithstanding.
In response to your other complaints...
(3) I think it's kind of hilarious to imply that I want to white knight SE. I have been, and remain, intensely critical of the development team behind FFXIV. You just happened to pick one of the very few elements of FFXIV that has tangibly improved since Stormblood released. There aren't many; this and the availability of houses are probably the only two I can think of, off the top of my head. But, you managed to find one.
(4) If you're keeping anywhere near 120 currencies, you're doing it wrong. The vast, vast majority of currencies are deprecated at this point in time. There is nowhere near 120 currently-relevant currencies in FFXIV. My SO has this problem as well, but unlike you, she isn't inclined to blame SE - she knows the problem is her, and her lack of knowledge in regards to what is or isn't relevant anymore. I certainly think SE could help make it more obvious, but that's a separate discussion.
(5) Nobody's defending the Retainer interface, to my knowledge. What I at least pointed out in your previous thread, though, which remains true in this thread, is that the Retainer interface is only problematic when you couple a large (non-standard) number of Retainers with a relatively disorganized player. Could it be improved? Sure. Is it worth the effort to spare this niche group of users a little bit of pain? Arguably not.
I'd really urge a look in the mirror at this point. You've now made two threads wherein the responses have indicated quite clearly that your complaints are very much YOUR complaints, rather than issues facing a majority of players. Everyone's got an opinion and all that, and you're entitled to yours, but I really wonder what you're hoping to achieve with your combative posts at this stage.