So do I understand that correctly that you’ve never worked with a tablet?
In my opinion, bigger is not automatically better, in fact I regretted getting an A4 Intuos way back (a used one anyway), it turned out out way too unwieldy, so I deliberately use a smaller one now. It may be less of an issue with a display tablet, but unless you’re the kind of artist that draws more moving the forearm rather than the wrist, you might realize that you don’t really need that area and just have to move your hand a lot unless you just pan the canvas anyway.
The other thing is, 1920x1080 is a really low resolution for that size. You need to take into account that your normal monitor should be roughly twice as far from your eyes as a drawing tablet. And even at that distance, 1920x1080 is just okay, so you may find the lack of sharpness straining your eyes after a while.
So you should really try to find a place where you can give it a try before you dump the money into something that doesn’t meet your expectations.
To me the lack of resolution made those display tablets unattractive until the the 12-13" ones with 1920x1080 came up at affordable prices, the large 4k ones are certainly impressive but as I said, I don’t need or even want the >20" monsters. So that’s why the Wacom One 13 is on my personal wish list now, mainly because it’s the only affordable one with proper Linux drivers.