I don't get it.
Two segwit branches fighting over 1M or 2M blocks feels irrelevant to me on a technical level. Both are almost the same, the diff in block size between 1M and 2M isn't that big. Its more like a battle of egos or a battle to gain control of the bitcoin brand, or an attempt to sack the core developers. Honey Badger don't care.
Or
From another point of view the problem is that forks are muddying the water, bitcoin as a concept was once clear but now is not. Additionally the limit of 21million has been cloned to 42million to 63million and so on, of different types. So far bitcoin (or the chain that is perceived to be bitcoin) is continuing on happily but the seeds are being sown for the crypto winter to come.
Is that the DOOOM you speak of?