Not the parent poster, but if he were me: that can easily look inconsistent (and inconsistency is ugly), and it can also be more work (as you need to walk through whatever steps you planned many more times). And of course, if you do show multiple browsers, which ones? E.g. if you want to include both safari and IE, you need at least two platforms (more work). Firefox & chrome can be quite different across platforms when it comes to acceleration, so if that's a factor...

Perhaps one token screenshot to get the message across isn't a bad idea, especially if everything else is chrome - webdevs sometimes seem to think chrome is good enough for everyone, and if there are compat issues in modern sites, it tends to be due to chrome-specific design (IME, but I bet if you've got a particularly windows or apple focus things may be different).

I do that sometimes, but that's kind of weird too. If you're reading a tutorial that keeps flipping between browsers, it calls attention to the browser rather than what you're learning about. We do sometimes flip between browsers for conference demos - I try not to call attention to it - just use a few different browsers and people who notice that kind of thing will see it.

What next? Different operating systems? :) I suspect the guy just wants to get some work done.

I'm ok with whatever browser works for him, and I will choose whatever browser works for me if IE/Chrome/Firefox does not perform optimally to my own standards.

Just to clarify, I'm not suggesting that everyone should do this. But, if you work at Microsoft, and you think that your choice of browsers is unfairly judged whether or not you use Chrome or Edge, then I'd do the following: Show the first screenshot in two browsers (Chrome and Edge), and then show the remaining screenshots in my browser of choice. Or, show the first screenshot in Edge (or Chrome), and then show the remaining screenshots in the other browser.