It can trip up muscle memory of daily tasks, it can get in your face by insisting you explore and enjoy its brand-new goodness, it can even make you relearn a task you had mastered. Bonus points if it is difficult to disable or shut up, and double score if that's impossible.
Every single user of JetBrains' products is under time pressure to produce working code as part of a project. There will be time to learn about new features, but that time is not today. If you have an ounce of common sense or a microgram of experience, the time for new features is when you're ready, probably after others have gone in and kicked the tires. That AI assistant may be fabulous, or it may be an intrusive, buggy timesink that imposes its own ideas on your work. AI assistants have form for that.
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