Just to clarify, PDF parameters don't work with the built-in (browser API) readers in Chrome, Edge, Internet Explorer and Safari. Unless you're using a really old browser, plug-in support is gone.
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When native PDF handling came out, absolutely nothing worked right, but there have been some updates to those native PDF handlers since their introduction.
I'm not sure about Safari (no Mac) but setting the page a PDF opens to works perfectly fine in Chrome, Edge, Vivaldi and Firefox with the built in readers under Windows 10. I haven't tested the other parameters, but it looks like zoom works in the majority of those browsers as well (Edge being the only one where it fails).
I imagine, as time passes, more support will be added and eventually, we'll have something fairly similar to the old Acrobat plug-in as far as feature sets are concerned.