Hard disagree.
I sold my large collection of records recently, for 2 reasons.
1. Because I realized I hadn't listened to effectively any of them in the past 5 years, across 2 house moves. I'm leaving on travel soon and may work abroad in the future, so better to liquidate now than later.
2. My entire collection had that "vintage" stink, aka mold/mildew/etc. I had mixed old and new records together, which effectively tainted the outer cardboard of the records. This caused me a serious amount of stress and anxiety (which is a separate problem to resolve) to the extent that I rushed selling the records to a record store (which I have minor regrets about, blog write-up to come on this all).
This all to say, while I really do dislike how plastic dependent we've become in society, from everything like fruits and plastic bags, I LOVE that CDs come in jewelcases for 3 distinct reasons
1. The plastic CD case protects the CD, and the inner paper booklet, from damage and other external factors, if stored properly. Also, cardboard cases for CDs often don't include inner booklet notes, which is disappointing. Cardboard CD cases are less resilient to damage as well.
I personally need some plastic archival bags (and if you can recommend some, please do), because I want to avoid my CDs coming to a similar fate as my vinyl. I found a few that caught a bit of a stink recently, and hurriedly cleaned the exterior cases (another benefit).
2. The plastic cases help with management and organization of the physical collection very easily, as every case is effectively the same size. While there are some slimline CD releases, and of course cardboard or double/deluxe CD releases, for single CD releases they all conform to the same size, making require space estimates and stacking very convenient to do.
3. Extremely easy to replace if damaged, dirty, smelly, etc. You can buy new blank CD cases so easily, and if you can't find an exact replacement, similar cases could be found. This is one reason I dislike vinyl cardboard covers: if the cover is damaged or stinky/moldy/etc enough, you're screwed. Throw it out, but good luck finding just a cover replacement. Whereas with a CD, you can get a digital copy of the inner booklet and CD one way or another, and remake a new physical copy if desired. Obviously, that's done for personal consumption only.
By extension of that last note, I want to say I love CDs for the fact that they're robust, reliable, DRM-free (excluding previous cases), high quality, and identical every play.
/end my input /start personal rant
Having the power to own your media physically and digitally is another benefit (by ripping the CD). I also love that many CDs come with the inner booklet which often contains interviews, lyrics, bonus photos, or other fun content that wouldn't be found in a vinyl release. I do admit that vinyl releases are beautiful with the large print 12" covers, but how many records do you realistically prop up on a shelf somewhere?
We moved off VHS tapes to DVD, and Blu-Ray has been around for years now, and yet despite that DVDs are still produced. I don't forsee any kind of death of CD or DVD in the near future, especially as more streaming services pull back or move media in and out of their catalogues; increasing costs don't help either.
Also separate side note, the case for a vinyl record being an involved process I agree with. I would say that limiting CD purchases per month could be viewed in a similar fashion, buying 1-3 a month and listening to each through.
Keep on collecting!