As the cited materials indicate, Reagan seems to have been conflicted on AIDS – his actions post 1986 are laudible, but his prior silence (and personal feelings all along) may have been a reflection of some anti-gay prejudice (which was more common at the time).
Not to hijack this into a GD, but I personally think the RNC is overreacting at the suggestion that Reagan would have expressed a sentiment such as “they that live in sin will die in sin”: I do indeed remember arguing with quite a few conservatives who held that AIDS was a plague from God. It was not nearly as odious a position as it would be today.
Public opinion changes, and leaders (liberal and conservative alike) are influenced by these changes.
It doesn’t diminish public figures to tell the whole truth about them, in perspective. (E.g., Abraham Lincoln held some views on race that would put him way outside any mainstream political party today).
Apologies for the hijack.