Why the left really hates Goresuch

Although progressives may be willing to concede that Gorsuch is preferable to Garland on criminal justice, they tend to view another contrast between the two judges with alarm. Gorsuch is more inclined than Garland (or Scalia) to question the authority of administrative agencies.
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Prior to Gorsuch's confirmation, People for the American Way cited a 2016 decision as evidence that he would undermine the ability of regulators to "enforce critical laws, safeguard essential protections, and ensure the safety of the American people." The group neglected to mention that Gorsuch's opinion sided with an unauthorized immigrant fighting to remain in the United States.
Because reducing government power against people is a Bad Thing in progressive thought.