Don't have your personal ethics be subject to someone else's ethics, because if you do that, then it means you don't really have ethics.
You aren't accepting to an industry, you are accepting to a hiring manager. And it's just rude to act this way. Exploding offers aren't great, and if you have a problem with them, then simply don't accept them. You miss some opportunities this way but you feel better when you look in the mirror. Regardless, as others have noted, Coinbase has some specific issues that aren't indicative of a broader industry probem. They seem to be handling this as well as can be expected given those problems.
You aren't accepting to an industry, you are accepting to a hiring manager. And it's just rude to act this way. Exploding offers aren't great, and if you have a problem with them, then simply don't accept them. You miss some opportunities this way but you feel better when you look in the mirror. Regardless, as others have noted, Coinbase has some specific issues that aren't indicative of a broader industry probem. They seem to be handling this as well as can be expected given those problems.