With all due respect, Apple’s size is why these things happen. More replacements means a statistically higher chance of defective ones I think being on support

With all due respect, Apple’s size is why these things happen. More replacements means a statistically higher chance of defective ones I think being on support for 3 hours without them doing anything is the bigger issue. You’re entitled to a working replacement, you should be able to get a working replacement without putting in unreasonable effort.