The DMCA doesn't explicitly affect linking to infringing content - that's mostly on the courts that have made that interpretation, even if the DMCA has helped to enable them.
Correct, the DMCA has made it possible for linking to infringements to be found illegal. This bill doesn't touch that. You can't just handwave it to the courts when the DMCA is the foundation of their opinion. The DMCA is still responsible for its unintended consequences.