To 1: Actually, I generally don’t always stand still when speaking…l frequently walk into a colleague’s office and pace a bit back and forth….for many adults (not just kids), standing still for an extended period of time is difficult. I’m obviously not referring to shmoneh esreh, etc. but to p’sukei d’zimrah and other portions of the davening where you are not obligated to stand in a solitary position.
‘Also, if I were to take your argument literally, when talking to another person, especially someone of great importance or authority, I wouldn’t be shuttling back and forth as many do while davening, even if holding the same position. Why is pacing a bit different from shuttling using your moshol?
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