For example, they probably get thousands of requests for account assistance. But they have full access to the emails in the account. And related metadata like age of account, volume of emails, other services used (Android apps released, Youtube videos created), and others. It should be simple to create an algorithm to prioritize the requests. So if an account was created a week ago and doesn't have much history? Low priority. An account is 10+ years old and has regular bank statement emails incoming? Highest priority.
And if that's too much work, just provide a paid option. Tell users that if their issue is really important, then pay some amount (such as $50) to get immediate urgent support. The user with a one week old account won't care enough to pay. The spam scammers obviously won't pay. But the user with all bank accounts, brokerage accounts, other important services going through their gmail account? They will likely pay to get assistance.
Instead every account gets the same shitty treatment. They could easily identify the important accounts to look into first using data analysis and algorithms. They're supposed to be good at this stuff! Or provide a paid option. Or do both. Only explanation I can think of is that it doesn't look good enough for a promotion so nobody at Google cares.