If you join with the expectation of stock or are sold on stock as part of your package then yes. Based on the article, people were offered stock contingent on another funding round. That round never happened. If they were sold on promises of getting that stock and a round happening then they're right to be pissed.
This has, as I read it, nothing to do with a company that just decides to not give out promises of stock in any form.
Does a statement of the form "you'll get X if condition Y" imply "we will seek condition Y so that you can get your X"? I don't think that it does.
For example: companies offer dividends if they make a profit. But that doesn't imply that the company will seek to make a profit in order to confer dividends. It's nice when they do, but there's no implied promise of working toward profitability just so that the dividend condition will apply.
In my experience companies do far more selling than just sending out an offer. Furthermore, the offer in my experience doesn't include the paperwork for equity unless you request to review it.