WhatsApp incoming video calls do not show accept/decline and can’t be silenced

The incoming video calls from WhatsApp are so inconsistent with the general incoming call behavior. Ideally, you’d have the accept and decline options right in the banner but there’s nothing of that dirty for these. Just touching the banner will immediately accept the call. This is by far the worst unintuitive feature I’ve ever seen. I attended two calls by mistake while I was in meetings. I figured you’d have to long press to get these options but that’s so inconvenient and frustrating. What’s more frustrating is that there is no way to silence the ringer except to put the entire phone in silent mode. I’ve tried single pressing, double pressing the power, volume buttons but to no avail. I tried searching for this but no one else seems to have this problem. Is this very specific to my device or is this general? Any way to solve this?