A: No, the video email experience is similar to the video experiences that work well on Facebook, Instagram, Twitter, etc. - the video starts playing automatically when the email is opened - muted, often with captions. Interested viewers can then click on the video to be taken to a destination of your choice, which can include the video playing with sound, or your product page, whatever you want depending on your marketing objectives.
In this way >98% of your audience enjoys the video content, compared to ~5% if you have to wait for them to click.