I concur - I saw the React Native repo getting spammed with hundreds of similar issues/prs. So many unique usernames and such a cumbersome process to report a painfully obvious spam account. I hit the limit of open abuse reports you could have. My attempt to help was ended - I was only 4 accounts in.

Thought I would get creative and add comments to one of my existing reports of the other 10 or so spam accounts. The tickets were closed and only the main account was deleted - not the others mentioned in the ticket.

So I gave up.