I think the diversification of options for web browsers is increasingly important, because Google has made Chromium the de facto standard for the web and positioned themselves to be able to drive standards changes that Google wants, such as DRM.

And because building a browser can be so complex, even the major alternative browsers now are based on Chromium, which is controlled by a pool of Google developers. So Microsoft Edge, Opera, Vivaldi, and Brave, often referenced as alternatives to Google Chrome, are still to a significant degree Google Chrome under their respective hoods.

The only truly independent browser from a credible company with reasonable market share to stand in the way is Firefox by Mozilla. There's also Safari from Apple, but if you're concerned about Google, Apple is not necessarily a reassuring alternative.

Lady Bird seems like an ambitious and credible alternative intending to fully comply with modern web standards with a seemingly inspired and committed developer at the head of it. It can help maintain a diversity of web browsing options, which is increasingly important.