You are absolutely welcome to your opinion but most of this isn't true either. Federal prosecutors, and special investigators don't just throw **** at the wall and see what sticks. That has never, ever been the case, and I see no reason why it would start now. The logical thing was\is to do a thorough investigation and make sure the charges you bring will withstand appeal so that the special prosecutor doesn't look like a stupid jack ass that's bringing charges for politically partisan reasons.
Also, Biden isn't single-handedly responsible for anything unless he was the only one that could vote. If not the rest of congress was just as responsible as he was, or else you could to each and every person and say the same thing about them.