But that person on twitter is not posting on here, and likely don't have an account, or if they do at least is not vocal about their disappointments. So you completely missed the point.
Yes there will be things that comes across in the PR as being accessible that will not be. That is expected when something new opens, not everything the PR Dept puts out is 100% accurate. Will 99% of guests be vocal about it or will they go with the flow? I'm betting again that more than 99% will just go with the flow. It'll only be that less than 1% that will be vocal about it, and is likely the same people that complain anyways when something doesn't go their way.
Now with all that said I'm not saying they aren't entitled to their opinion or their disappointments of not being to walk up the Falcon ramp. But my point is you're making this out to be a large scale issue where there will be 10 hours waits to get into City Hall to ask for a refund because little Johnny couldn't walk under the Falcon, touch it, and go up the ramp. What I and others here have been saying is that it won't be a widespread issue like you make it seem. Especially when guests asks CM why they can't actually walk under the Falcon, touch it, and walk up the ramp, and are provided with an answer like, "Hondo wants to make sure the Falcon is in working order when you fly your mission, so that is why you can touch it or walk up the ramp." 99% will accept that answer, because most guests accept they are in a theme park and just go with the flow anyways. So it'll only be that less than 1% that will be vocal about it and complain and flame the land for not meeting their unrealistic expectation of actually being on a Star Wars planet.
Bottom line, will there be some that complain, absolutely. But there are people that complain on the littlest things in the parks anyways, so that is a given. It just won't be a large scale issue like you think.