I'm a customer and I want to be valued and treated like one. Our interaction occurred because I needed or wanted a product or service that you offer. I paid you. If I have a issue with your service or product I expect easy access to a direct and responsive communication channel to resolve them with you.
By default I'm not part of your "<insert company or product> community". Despite your effort to redefine the term, that's not communities work. Again, if our seller/buyer interaction was satisfying for me I'm completely happy being simply a customer
I also don't want you emailing me asking if I can help answer other potential customers questions for you, review things, or otherwise do your sales job for you. That would be similar to the local grocery store asking me to assist others with their self checkout because I've used the self checkout successfully and now have been declared to be part of the "grocery buying community".
Again, I'm very happy to be simply a customer. Value me as one.