I recently switched to a stand-up desk combined with a treadmill platform, work says it causes loss in productivity during meetings. Thoughts?

So I’ve gained a good 10-15 lbs since WFH. I invested in a stand-up desk and walking platform so I wouldn’t be so stagnant during work. Today they told me that I couldn’t use it during any meetings because it’s counter productive, any thoughts around this or have similar experience?