I think this is a bit unfair.
(1) If a person does not know what line their destination is on it is likely that they will also not know how far away Logan is from the city. So a 25 minute ride is not bad at all.
(2) Public transportation is crowded. I just returned from Paris and London and the RER was crowded, and so was the Underground. I don't think anyone expects differently.
(3) Having the destination not be on a direct line connected to the airport is possible in other major cities where the public transportation is better. For example, going from CDG to Place d'Italie.
(4) The Silverline from the airport is FREE. And if you're not transferring to a bus, that means your ride from the airport is free. That's great.
Also, having the wait times displayed as they now are alleviates the feeling of hopelessness when waiting 10-15 minutes for a bus.
Airport access in Boston is not so bad.