It seems that the post is highlighting how the subscription and refund options of these companies provide a far worse experience than the Apple App Store which

It seems that the post is highlighting how the subscription and refund options of these companies provide a far worse experience than the Apple App Store which is a legitimate concern for why providing a work around can lead to worse user experiences if these companies provide their app via a different chancel that doesn't enforce certain UX requirements. For that reason the comment does seem helpful and relevant.