Not to malign your post OP but for some context this happened in (iirc) February. So it's not even like this is just now happening, it was pretty soon after the release of ChatGPT.
I really suggest checking out the original blog post, it has an INSANE graph of submission count (and yeah, it was Feb 2023). And the owner of the magazine is absolutely against submission fees because it goes against the ethos of the magazine in the first place, which is to make a platform for unknown authors, who are often from countries where easy online payment structures aren't in place; and also, a submission fee restricts to those who can afford it. Really tragic ending.