Why glue it together yourself when a community or someone working full time on it can glue it for you? As a bonus you also get documentation. Since it's open source you can read the code, and it even is based on the stuff you are recommending. If you value your own time it's a no brainer.
It's worth gluing together 1) so everything is explicit, 2) you don't have to write all of the schrodinger's cat "if executing on client, x, else, y" logic inherent in SSR frameworks, and 3) you can avoid Next.js's slowness
