My take is that the hacker news crowd is not the target market for Warp. I think it does an amazing job of making the terminal easy and friendly to infrequent users. I'd recommend it to anyone who tells me they prefer a git GUI interface over the shell because of how confusing the shell is. (this is where Warp's completions really shine)
But if you're already very comfortable in the shell and have a customized setup there's some very rough parts of Warp. Lack of any compatibility with existing bash/zsh completions is the huge deal breaker for me.
Also you'd be surprised at the number of software engineers that really don't care how many sentry logging calls their apps make. I completely agree with the sentiment, and I personally just disable the Warp application's internet access to address this, but it's worth recognizing that we're in the minority of people that care.