Its a trade off though - its orders of magnitude harder to develop a web browser app, and they are slower, and there are limits to what you can do. So yes the link is easier but its a trade off, so just saying you can just send a link glosses over a lot of decisions, you can just send a link to something on an App Store to, and the power difference in the apps is significant and really how hard is it to install something from an App Store

Sure, if the only metric you care about is "how easy is it to try out my project" then making a website makes sense.

That's a very single-dimensional decision making progress. You're nowhere near convincing that all UIs must be made with a website.

Even if we restrict our view to UIs made for businesses for the purpose of making a profit, native apps make a lot of sense. Just think of any big tech company; they all have robust apps and consumers largely prefer the apps. You can order door dash or an Uber in a web browser, but people almost always use the app because a good native app is a better experience than a good website app.