The contention is "what comes after segwit?" On the Core side is "nothing" (i.e., just segwit)
lol
In fact, the Core has many things after segwit; some of which are already done (compact blocks), signature aggregation, weakblocks, flexcaps, etc.
All anyone else has is MOAR BLOCKSIZE REGARDLESS OF THE CONSEQUENCES and some heads on spikes.Yes some nice consequences of having more transactions, greater adoption, lower fees, faster confirmation - no head of the spikes is necessary.
You do realised that Bitcoin is not your toy, such that your personal agenda/opinion/perspective is irrelevant. Only what is best for bitcoin and the users matters.