It absolutely is shameful, but the illiterate clown who wrote this article should have done it anyway

Yes it is

So, at this point, we might have some issues to disclaim AI without a clear scale of usage. Does proofread your text implies you were assisted by AI? If so, why don’t we see people mentioning they used specific tools to proofread before AI apparition?

Ironic that OOP is writing about proofreading with AI and seemingly didn’t proofread. Especially for non-native speakers, I don’t think it’s shameful to use something like Grammarly — you might actually learn something about grammar along the way.