The interesting thing about this is that I actually respect the Democrats' attempts from 2016 to 2020 to de-legitimize the 2016 election. They had a much worse set of cards than the Republicans will have post-2020 but they sure played them as well as they could.
'Russia hacked the 2016 election in some undefined way' is a lot less convincing than 'Democrats kicked out Republican observers in a couple of counties in PA, GA, MI, WI, NZ, and AZ and then stuffed the ballot boxes to change the result of the 2020 election'.
The GOP could really learn from the 'play the hand your dealt as long as you can' approach the Democrats took.
And when people say 'it's a waste of money', is it, really? The US Federal budget for 2020 is
$4.83 trillion. A few tens of millions spend on investigating elections is nothing.