Several older Butterknife versions are still working, for example:

implementation 'com.jakewharton:butterknife:10.0.0'
annotationProcessor 'com.jakewharton:butterknife-compiler:10.0.0'

ButterKnife Context

ButterKnife, created by Jake Wharton, was a widely-used Android library that simplified view binding and event handling through annotations. However, with the advent of View Binding and Jetpack Compose, it has become obsolete and is no longer actively developed.

Despite this, older versions like 10.0.0 are still operational in existing projects due to their compatibility with certain Android build tools and development environments.

Why Older Versions Still Work

Backward Compatibility:

ButterKnife 10.0.0 was designed to support AndroidX, making it compatible with modern Android development tools up to a certain point.
It works with legacy projects that haven’t adopted View Binding or Jetpack Compose.
Static Libraries:

Since ButterKnife is a static library, its functionality doesn’t depend on active updates. As long as your project setup supports it (e.g., Java or Kotlin with AndroidX), the library continues to function.
Gradle and Toolchain Compatibility:

Version 10.0.0 is compatible with Android Gradle Plugin versions up to certain releases.
Older ButterKnife versions may not support newer Android build tools, but 10.0.0 does for now.
Legacy Projects:

Many older projects still use ButterKnife, and migrating to View Binding or Jetpack Compose may not be feasible due to time or resource constraints.
Limitations of Using ButterKnife in 2024
Deprecated Library:

ButterKnife is no longer maintained, meaning no bug fixes, security updates, or compatibility improvements are available.
Not Supported in Modern Tools:

It may not work well with future versions of the Android Gradle Plugin or Java/Kotlin updates.
Potential incompatibility with new Android features or APIs.
Performance Overheads:

Annotation processing during compile time can increase build times.
Compared to View Binding, ButterKnife relies on reflection, which can be less efficient.
When to Use ButterKnife 10.0.0
Maintaining Legacy Code:

If you’re maintaining a project that already uses ButterKnife, version 10.0.0 is stable and continues to function.
It avoids the need for extensive migration, especially in large codebases.
Specific Build Environments:

Older Android projects with Gradle and AndroidX dependencies compatible with ButterKnife 10.0.0.
Quick Fixes:

For short-term solutions or debugging, retaining ButterKnife may be more efficient than refactoring to modern alternatives.