In short, Renovate (by Mend) is a dependency manager for software projects. It watches your repository for outdated libraries, packages, and frameworks and opens Pull Requests to update them.
17 karma · joined March 23, 2022
There's more on the Github repo, we added a full list of features and benefits to the readme.
Of course, in the end it comes down to individual preferences :) Not saying one way is better than the other. We just felt that for us, the operator-based approach would work better and we're happy if the project is benefitial for others as well!