I posted a lengthy comment here explaining our reasoning behind these changes and addressing some of the concerns that have been raised.
I would also like to point out that the info in the latest blog/Steam post is no longer completely up-to-date: our current plan is not to remove the storage containers entirely, we're just putting some restrictions on how they can be stored in cabinets (by having some extra slots specifically for storage containers or other "nested containers"). We feel that with that change, and the significantly increased stack and cabinet sizes, we're at a pretty good middle-ground where there's plenty of space in cabinets without having to resort to filling each slot with a storage container, you can no longer extend storage capacity up to the ridiculous 2880 items per cabinet that's currently possible, and storage containers can still be used for some of the more niche use cases (such as ruin expeditions or storing large numbers of different types of items).
I would also really urge everyone to give the changes a try in the current unstable build, and let us know what you think! So far the feedback we've been getting from people who've tried the latest changes has been almost entirely positive, but I'm sure there are still things that could be improved further.