Quite, quite and quite to each of your points.
And if I might add a case in point too.. I recall the creation of FCUM as a response to events over at the Red Filth's gaff after the Glazers got the keys to the place.
Several friends (and indeed my own brother-in-law, sadly now passed) threw their lot in with the new club and all it (supposedly) stood for as a beacon* of truth, hope and honesty in the increasingly corrupt financial mess that English football was about to become as the 'money men' were taking over (their words or thereabouts at the time..)
However, did they actually stop watching or supporting United thereafter?
Not a bit of it.
Mostly via television, occasionally at the games themselves, they ALL continued to cheer on their original team, whilst claiming that they had the wider interests of the game at heart in their support of the developing FCUM enterprise. They continued supporting the 'United brand name' in whichever iteration it has presented since the Glazers' arrival, whether the original club or the youth team or the women's team or FCUM and so on and so on..
Not one of them has ever given up on The Red Filth. And it will be exactly the same for the Scousers, the Tarquins, whoever else they support, once this farrago of lies and distortions is against our club is sorted once and for all and in our favour.
I rest my case, M'Lud..
(* re 'beacon of truth'.. I may have got this wrong.. perhaps they were initially attracted by the offer of 'free bacon butties' at the early meetings..)