> When I post a note with mistakes that make it illegible, i'm faced with either replying to my own note with corrections, or posting a new note.

Replying to your own note is the right path.

> This makes the recipient's experience degraded, and forces both parties into an idealology they have no connection to.

What's the ideology in question?
@Laeserin did make some ideological points against edits, but none of the points I made are ideological. In fact, they are mostly technical concerns.

> this is something that exisis already with any replaceable events such as the profile information

Yes, this is true and it's possible to see different info for the same account depending on what relays one uses.
Therefore, one shouldn't trust account info to be consistent.

Accounts info are metadata. One doesn't generally reply to an account description or reference it. Consistency is less of a concern, but modifications are arguably more important because it doesn't simply represent a statement made at some point in time.
Also, one doesn't generally identify (and verify) account info by an hash, but, rather, by the user ID, so account info wouldn't be necessarily consistent even if modifications were not allowed.

> but for notes it can easily be resolved on the client side by comparing revision data.

That means having to pull more data from relays, instead of stopping at the first answer which one can verify given the ID.