Question for PC geeks about chromium based browsers feature: PWA

Hi, about a month or two ago I tested the Brave browser and found it has a feature that installs some websites as apps, (it only opens a new single window focused on the site, works the same way as a normal tab) eg. youtube, twitter, trovo.live, and creates a desktop shortcut to open it apart from the normal browser window.

This feature was added on the browser I use that’s why I’m trying it again:

https://help.vivaldi.com/desktop/miscellaneous/progressive-web-apps/

Does anyone else who still uses their PC to watch youtube, twitter or so find this feature useful at all? I think the original purpose was similar to the web panel to pass as a mobile device and have better compatibility with mobile sites or a have lighter version for low end computers but I’m not really sure.