Not hostile at all, and we arent degrading the user experience -- much improving it, in my opinion. With HTMX you can do real-time validation on each input element on the server and provide instant visual cues to the user anytime one fails.
https://htmx.org/examples/inline-validation/Moreover, HTMX makes it incredibly easy to change the whole paradigm of submitting data. You can eliminate some forms entirely and just enable a series of individual questions/inputs/selects one at a time, especially useful when a single static form isn't always appropriate (multiple pathways, questions/options that are contingent on the response to a previous question, etc).
In my experience the UI flow and degree of detail for avoiding common errors is greatly improved.