Really? Really?

    foo()?.bar()?.baz()?

This is somehow less clear, and somehow "more debuggable" than

    a, err := foo()
    if err != nil {
        nil, err 
    }
    b, err := a.bar()
    if err != nil {
        nil, err 
    }
    c, err := b.baz()
    if err != nil {
        nil, err 
    }
    return c, nil

One of these obviously has no bugs. There is literally nothing to debug. The other has no obvious bugs.

Oh, except look again, I accidentally forgot to return from those error-handling-statements and now I have what should have been a completely avoidable bug.

Ask me how many times I've been bitten by this.