Youtube video download forbidden by Chromium browser

[Jeffhs]

I recently downloaded and now use the Google Chromium web browser, after having used Firefox for many years. However, one thing I noticed with Chromium is I can no longer download videos from Youtube as I was able to with FF. I get an error message (with the frowning TV screen and a suggestion to download the video in question from another site, not an "Aw, snap!" message as Chromium will issue if an attempt is made to log on to a nonexistent or broken website) stating that Chromium, in effect, is forbidden to download videos from YT due, no doubt, to copyright and DMCA (Digital Millennium Copyright Act) restrictions. However, I am still able to download Youtube video from Firefox, so I reinstalled that browser for the express purpose of YT downloading. Seems to work well, with no restrictions.

I'm baffled as to why on earth Chromium is forbidden to download Youtube video, while such is and has been legally possible for years with FF unless, as I said, it has something to do with copyright and/or DMCA issues. If video piracy is such a huge problem these days, I would think every Internet browser in current use, with no exceptions, would be blocked from being able to download video. In other words, if such downloading is forbidden by Chromium, why is FF allowed to have such extensions?