A lot of the bloat complaints about Electron are addressed well in Sciter (https://sciter.com/) although, Sciter has its own set of limitations. I have found Sciter a great option for many use cases. (I'm not affiliated with Sciter in any way).
However they are proprietary, and this is a no go for me and many. There is no way I bind my software stack to an arbitrary unstable compiler ABI and its platforms. Nor I will bet on a toolkit that can disappear tomorrow if its only maintainer disappears or get hit by a bus.
We need something like these projects, but OSS and still I would be happy to pay for that.