I don't think I have a problem at all since many appear to be doing things their way. Especially folks who only use paypal I have no problem with using poshmark for certain items but the high end item I wanted to sell. I thought it would be best to use another route. If you feel I have a problem based on what you read and if that's how you feel so be it!
The veteran posters in the ebay forum all abide by rules very carefully. Whether it be Ebay, Paypal, the post office, or other sites. This is because these same rules have protected them against scammers on these sites and sometimes are the only recourse in handling dumb corporate ebay employees.
Basically you're not going to get any sympathy by saying you circumventing fees here.