You don't even have to go so far as saying they should change the embedded software. Here is the problem:
> The MyQ integration was introduced in Home Assistant 0.39, and it's used by 3.1% of the active installations. Its IoT class is Cloud Polling.
"Cloud Polling", meaning they don't have a way for an API client to register for state change callbacks. I'm sure this is why there is so much traffic - if Home Assistant wants to support triggers based on state changes (eg door opening, turn on home lights), then it needs to repeatedly check the status so that it becomes aware of the change in a timely manner.
(Personally I only buy/use devices with local control, and generally cut them off from Internet access. Just saying though)