I think you should ask yourself how all these tech companies that use Go in production ever reached the confidence to use Go in production without a "proper" debugger available.
Yes, a lot of people have gone to production with crappy technologies, this is meaningless. The real question is: could they have done it more easily using a better technology?
I don't think that's meaningless. I take it to mean that your (our, my) valuation of technologies does not hold the relative importance (or correctness) that it's perceived to hold.
As a programmer using Go, I think the comparison is spot on -- if you credit Go for having a much cleaner architecture, vastly better design around security, and profoundly well thought out trade offs.
With some work on libraries and tooling, Go could well become the basis of the next PHP, and become the tool of choice for small web projects. If this happened, the world would be a better (in terms of software-sanity, performance, and security) place.
50 years ago there were a ton of companies that were confidently using hex machine code for large systems in production. That doesn't mean things wouldn't have been 100x easier for them with higher level languages and more modern tools.
Of course I can get by without a debugger if I really need to, but that doesn't mean I won't be a lot more productive with one.