Yes, all tracing tools have overhead. It's the observer effect. Nowadays I'm better at warning about this than I have in the past. My company has a performance

Yes, all tracing tools have overhead. It's the observer effect. Nowadays I'm better at warning about this than I have in the past. My company has a performance engineering team, but I imagine smaller companies don't have any performance staff, or time to deal with understanding this. Hence the value in creating canned tools for others to use, provided their warnings are made clear.