Are you a June applicant/part of this thread? I see your comments everywhere. The first two posts of this thread make it clear enough who updates the spreadsheet. Most of those who post here seem to be aware already. And I know that
@shazahsan also helps update from time to time.
I don't find any issue with people asking to be added or asking to update their existing details. I also believe it's better to have as few editors as possible to reduce the rate of errors, but of course anyone can request access if want. I recently had to email the spreadsheet owner so they could remove an editor that was entering fake test invite dates and spreading confusion, for example.