If there's going to be a fee it should come out of Google's $100+ billion in savings that they are accruing in part by evading expenses like customer support. This person, and all Play store developers, are customers that paid Google to publish on their app store. They shouldn't have to additionally pay Google to provide the same support that is standard everywhere else even at scale, such as AT&T, Comcast, Amazon etc.
In the case of Google, neither developers nor end-users are customers. Their true customers are buyers of space to display ads, and buyers of data from user tracking.
While that was true twenty years ago, it was more like ads were the only service they had and buying their [only] service made a customer. Purchasing their goods and services is still what makes you their customer in most countries where the term is defined by commerce departments or similar, and now Google offers much more than just ads.
