Not necessarily. They included in the article that we could use decentralized contact tracing instead; and, an article arguing against a feature doesn't need an alternative.

If a refrigerator were being released with a microwave, do I really need to provide alternatives to where I could put the microwave instead?

Among other arguments, it argues that contact tracing is a source of mass surveillance. That alone, for the appropriate crowd, is enough reason to not use it. There doesn't need to be an alternative because the alternative is _not having it_.

Just because a bunch of developers ended up wasting their resources on a feature that is a net loss for society doesn't mean that the feature needs to be released.