The Jetpack requirement is a total no-go!

Why should a shop connect to WordPress.com in the first place?
And why transfer all this data to WordPress.com?

This is technically NOT needed to maintain a shop and neither for running a mobile app on a mobile device!

So there must be other reasons they require it: I can only imagine they want do things with people's data...! That would be the only reason or to make future upsells.

BUT: Sensible shop data has no place on WordPress.com or in Automattic hands.

Also, this whole thing is NOT GDPR compliant. In light of GDPR the usage must be possible without any data transfer. And if I use it still not only must be publicly available what data is transferred to where but also how long is it stored and which parties have also access to it. All this is unknown yet. A serious shop owner just cannot use such things. Not only for shops from the EU this is a no-go.

I can only but recommend any shop owner staying away of such products/services with such requirements.