I don't totally understand your answer, sorry.
I think that you are talking about the "official" nodes of Bitcoin, when you say that my blocks will be rejected. But if there are other nodes on another network, not on official Bitcoin network, they will be rejected too? I mean, those rules that reject Bitcoin blocks, will reject my blocks on another parallel network?
Thanks franky1
if you change a node to have different rules. only nodes that agree with YOUR rules will accept them
(thus you are just making an altcoin)
people running bitcoin nodes will not get your coin because your coin is not on the bitcoin network. thus no confusion
as the 2 networks wont co-mingle
you are not making fake bitcoins. you are making an altcoin.
there are already atleast a few hundred networks with coins that took the bitcoin code and changed many things
there are already atleast a dozen networks with 'near' claims of being the same as bitcoin
but no one gives a crap about them. no one cares about them as they do not impact bitcoin
you can try and play the social drama games.
such as NXT tried with "bitcoin2.0" in 2013 .. but people laughed and dismissed it
such as BCH tried with "bitcoin cash" in 2017 .. people laughed and dismissed it(some still poke at irrelevant social drama)
but the only way to actually claim to be bitcoin. would to actually surpass bitcoin where your network takes it over