Lexicus
Deity
Are independent and apolitical are the same thing? They don't seem to be, to me. Destroying the independent part through court packing does seem to change the quality of the structure of the institutions.
Yet you make no case as to what the actual distinct meanings of independent and apolitical are in this context.
Aside from that, my response would be that there is plenty of space between "apolitical" and "turning the Supreme Court into an ideological and partisan arm of the Republican Party."
I would consider the Supreme Court not to have been "independent" in any sense for almost my entire life. Certainly one could argue that installing a President in 2000 where the deciding vote was the guy appointed by that same candidate's father was a crossing of the Rubicon; if you don't like that one, then McConnell denying Garland a hearing is no different from court-packing.
In any case what your argumentation amounts to is that Republicans should be allowed to do whatever they want while Democrats cannot do anything to fight back, which is - coincidentally I'm sure - the outcome that apparently accords with your ideology and politics.