We are not Adobe in this forum, we are Lightroom Classic users. We do not ask you to sign in. We do not have paying customers. If this is really a concern for you, then you should contact Adobe, not us.
Instead of blaming Adobe for this, perhaps it is a user error that causes this. If you don't sign out, you shouldn't have to sign in again the next time you use your Adobe software. I know this works, because this is what I do.
If you are signing out via the Adobe Creative Cloud Desktop App. Do not do that, signing out in that App deactivates the Adobe CC software on your computer. If you have not been signing in via that app, why not?
Logging in via the LrC program as opposed to signing in via the Adobe Creative Cloud Desktop App is backwards.