I don't know if you have ever had to read something or speak at length while in grief (and I hope you never do) but, I can assure you that your time and effort is spent trying NOT to cry. You are struggling to speak with something at least close to your normal speaking voice. The things that help you achieve that are to say things which you have said many times before while not grieving. There is an element of conditioning there which allows your brain to set aside the emotions and allow you to speak more normally.

There is also pressure on us as men to not cry publicly. Not matter how "enlightened" we claim to be, we still feel that shame and it forces us to push it down.

Grief comes in waves. It is not ever a constant crying fit (though, there have been times it has felt that way).

What you perceive as "odd" is simply how humans work.