The tool is intended for taking down obvious scams, like wallet drainers, phishing pages, counterfeit items, drug stores, animal abuse, etc. It's up to the domain registrar to investigate and validate the report.

I don't understand your point about the tool being abused for mass complaints. We do have a captcha implemented with the form. If someone wants to spam a domain registrar, they can also spam from their email accounts. I don't see how we enable mass spam directly.