Why it's so hard to believe the lib line that "history will be kind to Obama"

It's no secret that democrats believe they have this guy leaving office who is going to be revered in the same way JFK, Eisenhower, FDR, Reagan are revered.

Why it's so hard to take this seriously is that no "great" US presidents saw their party fall off a literal cliff in terms of power as Obama has seen his. In fact, almost all great US presidents had a positive influence on their party's performance for years and sometimes decades. FDR's popularity helped dems win the white house after he left for an extra cycle or two, and helped maintain the democrats power-lockdown on the US house of representatives until the 90s. The republican party was an afterthought during and in the years after his reign. A generation of people because staunch democrats because of him.

Reagan's successor won 80% of the states and the reagan revolution continued in midterm elections in the 90s. A generation of people became republicans because of him.

Obama has done exactly neither of those things: His successor, who proudly ran presenting herself as a continuation of him, lost in to a twitter troll, people identifying as democrats have gone DOWN since he took office, and there is no generation of liberals created by his time as president. Every level of government has seen the decimation of democratic influence. The exact opposite happened under FDR, Reagan, etc.