The original content creator relies on advertising, click-throughs and maybe merchandise sales that you would be denying them by scraping their content. This is the entire argument against Google doing what they've been doing for the past decade. The value of Google, and by extension your rss reader, is generated by other people's content, it has little inherent value on its own as without content, it is useless. Drain the income of content creators for long enough and you no longer have content creators, so now you need another thing to generate content. Enter generative ai.
And thus was the internet of 2024 forged, through stolen content and seeing no value in the creations of people, only desiring more content at any cost, as long as that cost to the platform is zero.