SV2 only helps centralization if pools adopt it. Like @xz pointed out, AntPool and co. likely won't do so.

We really need public miners to start advocating for their pools to start testing/using SV2. If mining really is this centralized and censorship begins via large pools controlling what goes in their blocks, the value prop of bitcoin goes way down. This obviously is bad for miners, so they should be incentivized to push for change ASAP.