Yes, it's not just Disney being hypocritical. Stadiums, etc. are also guilty of a double standard, and I make my educated choices where to spend my money.
Of course Disney has every right as a private entity to exile any smokers to the parking lot area if they so choose. And I can chose during a 10 hour day at the parks not to walk to the entrance and out into some distant designated smoking area, which will probably have no seating.
Like you, I find some things "flat out gross", but I don't make disparaging comments, or disrespect other adults choices in legal recreational substances.