All monitoring comes at a cost and adds complexity. I wish people realized that, I struggle with this in my own team, we keep adding layers upon layer of monitoring, metrics etc.
I’ve definitely come across this genre of issue on many sites in the past when checking out the console when a site is broken. Page is just a blank white screen? Oh, looks like the render function was placed after the init for some 3rd party user monitoring, which crashed because the script didn’t load properly. “Complete Checkout” button just does nothing at all? Oh, looks like the code to take my money runs in a callback to some analytics script that my ad blocker blocked. Oops.
I had these issues before for plenty of things, it just hurts the most when it's something non-essential. I've had outtages because silly system updates to slack broke and took things down.
I run metrics and such out through logs these days because UDP don't care.
