They do mean something, but not necessarily in the context of line of succession. Senate condirmations are a necessary part of our governments checks and balances until they are misused like they were against Trump. We are currently navigating uncharted territory in many regards honestly, and none of us including Powell, Wood, and Ellis have any idea wht happens at the point we prove fraud to the masses betond doubt. we have yet to figure out who in congress was voted in legitimately as well. So to further opine upon your question; I would say that even senate confirmations can be called into question at this point because the senate races were just as compromised as the presdidential race. Fraud vitiates everything; and I don't know what happens next. We all have our theories, but this movie could have more surprises yet that we don't see coming.
I hope and pray that this all comes to a peaceful end, but there needs to be a major plot twist in this movie, and I'm not sure how you go about unplugging the matrix.