It's really not that simple. Censorship and spam are both inevitable. We should be asking bigger qquestions about how Bitcoin can evolve to better resist all kinds of attacks.

For example, can we keep prices low and fair for monetary transactions while increasing the cost of spam?

Can we more effectively penalize miners or mining pools for rejecting valid transactions, driving them out of jurisdictions that demand censorship?

Can we enhance the network's resistance to 51% attacks?

There's a lot more to this than the dubious efficacy of one particular spam filter.