It depends.
A shopping site or similar, then sure - the "one thing at a time " workflow works.
For internal line of business apps? I'm not sure sure anymore. From a comment of mine a few days ago: https://news.ycombinator.com/item?id=42148627
> Which is a pity; I was watching a client do some crud work in a webapp.
> Web - 1 form per page:
> Click "back". Copy some text. Click forward. Paste it. Repeat for 3 different fields. Click submit.
> Native apps (VB/Delphi/etc) used to be:
> Open both forms. Copy and paste from one to the other. Open another one on the side to lookup some information, etc.
> Webapps, even moreso with MPA, force a wizard-style interface - you only go forward through the form. This is not how people used to work; they would frequently have multiple forms in the same app open at the same time.
> With SPA and html "windows" made out of movable divs you can probably support multiple forms open at the same time, but who does that?