That seems like a pretty dismissive take. I've been on the other side of some truly ignorant bug reports, but I've also sent reports with code that, to the best of my knowledge, resolves the problem. If I received a bug report wherein someone was clearly annoyed with software they paid me for but still put the effort into trying to understand and resolve on their own, I'd probably prioritize that email and try to be empathetic about it.

Ah yes, I love receiving Smug Responses from developers who think they know what's best for their spaghetti code. I've been working with SQL longer than some of these kids have been alive. I know my shit, and I know when a query pings my slow query logs because of inefficient nonsense. Generally your end users have put it through far more paces, than you who probably don't use it in any production capacity. There's ZERO excuse for poor indexes, or NONE at all! Do what you want with the provided fix, because I've already applied to our systems to keep the server from crumbling.

Could it be that you have the 30,000' view, while they had a ground view and climbed up a mountain to fix the view for all those in their town?

Out of frustration I've broke out IDA Pro enough times to scratch my own itch that it's turned me to into a near Stallman-esque fan of open source software. When you work for small companies, bug reports on proprietary software issue trackers often get neglected.