Well Malwarebytes believes in a layer approach, do they not? This is currently a layer that Malwarebytes is missing.
Thanks for the suggestion of Hitman Pro. I have not used that since Sophos acquired it. As far as I am concerned, their anti-logging techniques are only offered in the Pro Alert paid version, too. I don't really need everything Hitman Pro has to offer, so Zemana anti-logger is a better choice for me.
Also, you are correct about malicious keyloggers/etc, but you should also note that not all keyloggers are malicious. Encrypted keystrokes protects against any kind of keylogger, not just the malicious ones. I think that is why people prefer to just have their keystrokes encrypted, instead of just a real-time protection that prevents against some keyloggers. In fact, over the years on Malwarebytes forums, I have seen other people request for similar features that I am requesting. I won't tell the Malwarebytes developers how to do their job, but I think it is something they should really consider.
Anyways, I am alright with using Zemana and Malwarebytes together.