Not really, I just find it completely unnecessary to create an account to use something that would be perfectly usable without an account, and I know I can use something like OBS Studio and use Buffer Replay but even with NVENC I feel that there is no program that works as well for recording on Nvidia as Shadowplay.
And I haven't tried to create an account with a temporary email, I just assumed that Nvidia blocks them by default, I'll try to do that.