Do not let these guys scare you to much. Hard forks should be embraced and they would only lead to a split if there is a significant amount of divergence on the matter. Therefore a split would only happen if enough people chose not to upgrade. This should be considered a positive thing, since it solves the problem of tyranny of the majority. The ability to split represents our right to self determination. The freedom to have the Bitcoin that we want, regardless of any minority or majority changing the code. Bitcoin is freedom, people are scared of this freedom. Trying to scare others to give up this freedom. Do not give in, embrace what Bitcoin is, embrace the genius of its design. The ability to hard fork exists exactly in order to resolve such disagreements, this is the governance mechanism within the protocol that ensures the freedom and continued decentralization of Bitcoin.