I use Postman daily and I have never created an account. I think it only nags you when you start the app for the first time. I just import/export my collections to the git repo of the API I am working at.

Sure, the whole cloud login, team synchronization stuff is totally useless for me, but it is not mandatory. Anyway I can understand why it may be frustrating to see all this bloat.

On the other hand I found that Insomnia lacks a few features that Postman has. For example there is no way to do scripting in Insomnia, there only is request chaining which is IMHO way more limiting than the Javascript sandbox that Postman provides. Most notably there is no way to generate request data on the fly.