"Which is a lot of times"
You can always imagine an ambiguity into existence. Chevron deference meant that wasn't enough and now it is. Human natural languages are naturally ambiguous. This Supreme Court ruling encourages courts, especially Right-leaning courts to just declare that oops, this text was ambiguous and so even though it's obvious to any normal person that Congress did intend exactly the regulation at issue, a court can argue it isn't sure they meant that and so the regulations have no effect until Congress finds the time to spell it out to the court's satisfaction, which may be never.
The bigger problem is that as judges find more and more tortured ways to fit their ideology onto the raw text this is further destroying trust in the justice system which erodes not just the republic, which presumably Republicans no longer give a shit about, but the United States of America itself, the country. Even an Autocrat needs that trust, the US isn't Monaco, it cannot be managed without a vast bureaucracy.
What's notable about the present Supreme Court isn't that they're partisans, that's inevitable under the US system for decades at least. What's notable is that they're not very good judges. Scalia wasn't great but he was smarter than several of the newer justices which is at least something. And Thomas is a joke, if this man was on my magistrates bench I'd have him kicked out.
When is the last time you saw a US Supreme Court decision which articulates a good principle of justice and uses that to explain the decision such that it seems in hindsight obvious and inevitable? There should be several of these each season, ideally the vast majority of decisions. Instead we get tortured logic and the sort of dubious attempts at reinterpreting somebody else's words by ignoring their plain meaning that would get you a poor grade in an undergraduate essay. This means more work for the justices, further over-burdening a system that is failing.
Take Obergefell. The dissents are pretty stupid, but even the Kennedy decision is poor work, if this gets a passing grade in BA Law the lecturer is too generous. Yes, James Obergefell ultimately deserved at least what this decision gave him, but the decision can't bring itself to articulate a core principle to explain that. If the Supreme Court can't or won't take such a stance, why even have one?