Telepresence is a tool that helps shorten the feedback loop of changes that usually require a deployment for proper testing. Developers can use it to plug a process that is running on their local machines into a remote Kubernetes cluster. This gives the local process access to the remote cluster's services and features, and the local service can also temporarily replace one of the cluster services.
In situations where the service integration setup has become somewhat unwieldy, Telepresence can boost developer productivity and enable more effective local testing. However, if you get into the habit of using a clever tool like this, you may have bigger problems. For example, if you use Telepresence because it has become impossible to set up all necessary dependencies for local development, you may want to investigate the complexity of your setup and architecture. If it becomes the only way for you to do service integration tests, consider looking into consumer-driven contract testing or other automated ways of integration testing.