Remember, people in support are used to a somewhat hostile tone. People get in touch when something is wrong, and so it's fairly common for people to be frustrated. If they just responded with "sorry, can't help you" to every support query with a slightly hostile tone, they wouldn't be providing much support.
And yes, it is also good to try and assume good faith and not vent your frustration at a support person who had nothing to do with whatever issue it is that you're frustrated about. But it's a fact of life in support that you'll have to deal with some unhappy people, so you need to be able to deal with it.
My experience is that support personnel often get worn out by so many hostile interactions and become more reactive to them.
Or the fact that you have to show the EULA before the download – which is also not really helpful in any way.
These rules don’t really help either side (as people producing malicious ads can still do so, but people doing honest ads have to comply with rules that don’t help at all), but add more stress for both sides.
Links to separate Web sites?! Better brush up on your Google policies. That'll get you banned.
That's said Google is going down hill for a while now.