I'm confused, the article starts with "Don't do heavy discounting, don't give away your stuff too easily" then ends up "Here's a load of discounts!".
What was the message you wanted to give?
They did say extended free trials did work for them, and while I struggle to believe long-term free users convert better than discounted users, that's what their data says. Most of their offers seem to be very extended free trials.
"Don't do discounts, but bundle and sale other people's discounts."
These article titles are very link-baity, regardless of their relevance to HN.