My onion is that the bank is certainly far from perfect; hindering the transition to renewable energy by funding projects with fossil fuel usage is an example of this.
Ideally speaking, I'm not a fan of facilitating economic growth via the use of private businesses as a middleman, but the argument for completely abolishing the bank and not replacing it with something else doesn't seem very practical. Abolishing the bank entirely without a replacement would cause economic issues, and it's not a remotely feasible idea when most major economic powers operate an export-import bank.