It really comes across that way at first. My first reaction was to close the tab at the "throw my water bottle" statement, but after reading the comments here, I read on and saw the author had more to say than just "someone move my bathroom." It's just poorly written, that's all.
Nope, the level of reader comprehension here is too low. She said that there was no line at the family restroom before she said she threw her water bottle. If that isn't enough to clue readers in about the real source of her anguish as opposed to the thing that first tipped her off, there's the whole rest of the article.
It's also poor writing. It was a third of the way through the article before she clued us in about what she was actually mad about. It very much read as if she were angry about the restroom situation.
However, this isn't especially relevant to the real point of the article.
Not really, the anecdote was described poorly and the exit to her main point messy.
I am also slightly bored of people finding things they wish to change and then simply publicising the observation. I was actually hoping that somewhere near the bottom she would offer some insight and/or offer solutions. It might be "Not OK" - but please take a few extra steps and suggest what you think could be done?