The thing I'd watch isn't that you use AI, it's that reaching for it first kills the part of being stuck that's actually useful. A block usually isn't a thinking failure. It's your brain telling you it doesn't have enough raw material yet. AI hands you a plausible answer in three seconds, which quiets that signal before you've gone and gathered more input, so the work drifts toward generic without you noticing.
What breaks it for me is changing the input, not the synthesizer. When I'm stuck on content I go read the actual comments, DMs, and reviews from real people. A line someone wrote usually hands me the angle faster than any prompt could. Walking helps more than it should, too. Blocks tend to break on movement, not on more staring at the doc. Then I bring AI back in later as an editor, once I've got a rough take. Use it to sharpen a thought, not to have the thought.