Because without this early resistance, there wouldn't even be vague promises of hobbyist/student exemptions. I think it's important to make community objection to the entire idea known loud and clear, especially when changes like these are absolutely ratcheting.

Starting from their first announcement of this, Google has explicitly asked for comments and feedback from affected developers. They have a Google Form for exactly that linked on all the announcement pages.

The exceptions for students/hobbyist were always promised, but the "advanced flow" came later based on this feedback. AFAICT Google has, so far, only made things better after the initial announcement. I don't see why we shouldn't give them the benefit of doubt, at least until we have some specifics.

Pushing this open letter out just days/weeks before Google promised the next major update just seems off.