They should think hard about their next move because all that these paywalls have done is make it so I don't read their articles, and I don't feel like I'm missing anything. Maybe I'm the only one? I'm definitely not signing up to read them either.
Modifying browsers is preferable to that. It will (hopefully) solve the the problem at the source, and make a HN-level solution redundant.
I imagine other news aggregators face the same problem.