Hi! I'm an Allergy/Immunology resident and I would like to refute some of the things you say in your article.
Regarding probiotics, while there may be some research linking the presence of beneficial bacteria in the gut with reduced incidence of food allergies, there's no evidence whatsoever that says that "balancing gut bacteria now and consuming enough beneficial bacteria can have a positive effect on allergies now", not for food allergy and certainly much less for respiratory allergy.
When you say the consumption of honey "doesn’t seem to have a downside", that is unfortunately not true. In fact, some people who are allergic to pollens may develop food allergy to honey, and while a respiratory allergy is only bothersome, a food allergy may be fatal if an anaphylaxis develops and is not treated in time. Also, honey is a highly caloric food, and should be ingested with moderation.
As for apple cider vinegar, there is not a single piece of evidence to back it as an effective treatment for allergies. Even if you try to think of a theory that may make sense... You can't.
In fact, when you say that over the long-term these "remedies" have lessened your seasonal allergies greatly, you can't possibly establish a cause and effect.
The only treatment that is scientifically proven and can potentially treat respiratory allergies is immunotherapy (commonly known as allergy shots). So, if you suffer from seasonal allergies, you should consult an allergist.