It doesn’t exacerbate it, it just continues it.

Of course FPTP is garbage, but NPV FPTP is better than EC FPTP.

NPVIC doesn’t lock-in FPTP, and it will remain just as easy (actually very difficult) to pass national voting method reform under NPVIC as it would without NPVIC.

There is a thread about this on the Election Science forums:

I’m pretty sure that approval is compatible with the NPV, and I believe that STAR is.

— Jameson Quinn

The National Popular Vote compact for now would be based on a plurality vote system, as used in nearly every state to elect governors and Senators. But nothing would prevent add-on agreements among states that could accommodate different systems, while holding true to the principle that the candidate with the most votes wins.

— National Popular Vote

I think the only path to national voting method reform is to start with local voting method reform and work your way up. Representatives aren’t likely to give up a system that keeps them in power.