I'm on Guidos side. When it's well used, it's a good thing -- problem is getting people to use it right. But the fact that many people didn't consider the use cases that were being proposed, immediately took strong and toxic positions about it, and were more interested in calling names rather than having a civilized discussion is what wore down the (then) BDFL and caused him to step down.

I was too. I've been won over with time.

Not because "Guido", I had the opposite reaction to asyncio, which he designed, enthusiastic at first then I began to see many design flaws.

But because it does make regex matching and reading bytes safely better.