Whether the project is FOSS or not is irrelevant. They're seeking distribution and in order to further distribute a project needs to be able to cleanly communicate why it deserves more distribution. Ironically, based on your comment, FOSS products are generally very good at this. What OP provided was criticism, and FOSS needs and welcomes criticism to stay strong and relevant. If OP was opening a GitHub issue and berating the maintainers I would agree with you.

tldr: "They don't get paid" is not an escape hatch for genuine, level-headed criticism, and criticism is important for FOSS to stay strong and relevant.

The argument presented was neither level-headed nor genuine.

It's a tad emotional but still cogent.

I find it extra funny that most of the comments recommend that they just say it's a webpack replacement. If you don't know what webpack is and visit webpack's site, you'll just see it's an asset bundler which Vite explicitly is not.

And if you do already know what webpack is, then "frontend tooling" and its list of features should make it very obvious what Vite is.