EDIT: this thread is a waste of time. We're going in circles.
As I said, I'm a professionally trained designer, lithographer and fine artist. I understand everything you've said, even when you've said it twice or more.
For anyone wondering about Pantone: Pantone and Adobe used to work together. Adobe's swatches were outdated, and they were not accurate on screen. This is why you purchased Pantone books. As of 2022 Pantone and Adobe no longer work together, and Pantone maintains app-based solutions for this process now. While I said earlier they weren't "accurate" on-screen, this is somewhat untrue given the dissolution of Pantone's relationship with Adobe. I actually haven't used the Pantone system because my job maintains up-to-date swatches for this very purpose. Pantone itself was set up as a way to get 100% accurate color in print jobs. That said, CMYK printing has gotten considerably better over time, which has cut down on the need for Pantone color printing (which can be expensive). Pantone is still preferred in specific applications (screenprinting as an example).
For anyone wondering about RGB vs CMYK, Transmissive vs Reflective, or Additive vs Subtractive: RGB (red green blue) is transmitted light. All colors combined create white. Transmitted light is, by nature, brighter than reflected or absorbed light because, as the name implies, it's a direct source of the color. CMYK (cyan magenta yellow black) is reflective light, so by nature it's less vibrant because it's bouncing the color from its surface. All colors combined together create black. Black is the absorption or omission of light. Additive and Subtractive are basically just similar terms. If you've ever taken an intro to design course you'll have learned all of this. I'm going over the basics here, you may have even learned about this at the K-12 level depending on the quality of your art classes.
For anyone wondering about Digital vs Print: RGB is digital. CMYK is print. You can convert both colors as needed, but there are reasons you may not want to. As an example: if you have colors that have accessibility concerns. When you run CMYK images on-screen they will appear dull, because your display is attempting to simulate printing. Obviously this isn't 100% accurate, but it can be really close with proper calibration (and with a printer who knows what they're doing). You never want to use an image with a CMYK profile in an RGB space (ie: web), because it will display in the same dull manner as mentioned above. There are also file types that are specific to whichever color space you're in. For instance: if you want a transparent background in print you can use a PSD, and in digital a PNG. SVG and EPS are both vector files (ie: mathematically perfect images that can be sized up or down without losing clarity), but SVG is typically found in web applications and EPS in print.
About lithography and printing in general: I would think I wouldn't have to explain this, but lithography is one of the oldest printing techniques around and it's the basis for modern offset printing (and printers sometimes refer to offset as litho, even now). There are multiple ways to do it, some of which are much more labroious than others (looking at you, limestone). A fine art lithographer typically mixes their own ink colors (which are CMYK). Depending on complexity you may mix upwards of 10 or more colors, and you treat this in much the same way as mixing oil paints. You typically treat the surface you're working on to accept the color so that it can be transferred to paper (though sometimes you do intentionally force the surface to not hold color). This intersects with design, as it's one of the fundamental ways you produce printed work. There are other types of printing, such as screenprint, intaligo (ie: engraving), etching (soft ground, hard ground, aquatint, etc.), wood cut, and linoleum cut. All of them function in different ways to produce an image, some using grooves to hold the ink, others acting like a sieve, and still others by retaining the color on the surface of the medium.
All of this to say: Color accuracy matters, even when you're not doing something professionally. I'm personally sensitive to reds when they're not accurate, as an example.
If you have any other questions about if I know what I'm talking about, you can DM me.