If I have a program that encrypts and decrypts passwords, then the surface area is way smaller than if it also has browser integrations and a bunch of other features. Every feature has the potential to make this list longer: https://keepass.info/help/kb/sec_issues.html which applies to any other piece of software.

At the same time, people can make the argument that software that's secure but has no useful features also isn't very worthwhile. From that whole discussion, the idea of having a minimal package and a full package makes a lot of sense - I'd use the minimal version because I don't use that additional functionality, but someone else might benefit a bunch from the full version.