I don't love React but the examples you mentioned make web component look bad. It's as bad (bloat) as React.

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EDIT: add links of evidence

https://github.com/adobe/spectrum-web-components/discussions...

https://github.com/shoelace-style/shoelace/issues/525

I've seen many people in this space often forget to utilize `import` and `export`, that is not trying to write composable modules so that it's treeshake-able.