I think you just scared them because you said "I got 5 gallons". A lot of people are used to the pool store method of "I bought X and put it in the pool", but you were just (correctly) getting a lot because you knew you'd need more and could get a good price. Nothing wrong with that. I mean I bought 25 gallons from Menards the other day, but that doesn't mean I dumped it all in when I got home.
The PH thing was worse because I think we were all afraid you'd raise it and then have to lower it and suddenly TFP way would feel like pool store (raise this, lower that, raise it again, lower it again). People here genuinely want your pool to be awesome and also genuinely care about the purity of the approach...all with good reason. Also a bunch of the regulars are following many many MANY threads so you have to forgive the occasional misunderstanding or overreaction. =p