But again, you're incredibly wrong about SSD being a "workaround". It's essential. If anything, RAM is a workaround for main storage being too slow.
You could also say that a GPU is a workaround for the CPU being too slow to render graphics... A platform is a sum of its parts, where each has it's specifically designed purpose, not just one, it's like a chain that's only as strong as the weakest link (as seen with Jaguar CPU last gen), but at the same time making a single link 10x stronger than others doesn't change much, if anything.
And like I said, it's not me, you have MS themselves telling you exactly why they went with the SSD, what it's purpose and features. Next year the consoles will get totally smoked by NV Lovelace and AMD Zen4 and no magic SSD trick will be able to close that gap, not even close, the PCs are doing circles around consoles already. And we already see the PS5-only games heavily relying on the mentioned SSD tech, like DS Remake that doesn't look anything the PS4 wouldn't handle at 1080p30, and R&C which up until pointed out by the community manager on Twitter nobody would've been able to tell the assets are being constantly streamed in and out as the camera moves. That's what I'm trying to say the whole time, under the hood the games will run different, sure, but the end users won't even know/notice it, just like if there was simply a lot more memory and everything was already loaded and waiting to be used instead.