> just no longer have an appetite to do any kind of proactive enforcement

The overturning of the Chevron doctrine removed the ability of the government to do many kinds of proactive enforcement.

> Part of me feels like this is intentional and by design

It is absolutely intentional and by design. It aligns with other recent changes in the legal landscape, such as ending the ability for lower federal courts to issue nationwide injunctions. This requires more groups to accumulate more funds to pursue more lawsuits in more regions, re-establishing standing, re-establishing harms, re-arguing against the same harmful and illegal acts.

You're allowed to fight back, but only after you've been harmed, and only at great expense and effort, and with the deck stacked against you at every level.