Saw this article about some people doing amateur bolting in Canada https://gripped.com/profiles/dangerous-bolts-added-to-yamnuska-removed/
As I'm one of the people here that has often argued that instances of dangerous bolting by inexperienced people are rare, I thought, fair's fair, I ought to post this!
It's also a great article as it's not just the bolting that is suspect, but the "quickdraws" and the obviously jaw droppingly low level of knowledge or experience of the team who did this.
I also like the response of the climbing community - chop the bolts and say very loudly and repeatedly that this is wrong, sure. But also admire the endeavour and gumption of them, and hope to draw the culprits into the fold and help to educate them. The right response in my opinion!
