So who is rooting for that? You just defined what you found entertaining.
If you were in that race or had been before and found yourself in the jersey; what would you do? Unless there was some hill or super-technical course element that would allow an attack that could generate a gap you'd be best advised to save energy until an opportunity or threat occurred. Remco attacked and could not get that gap. That means he was not strong enough. It was exciting to see the tension play out.
By the way; I admire both riders. Having put some miles into racing there is an appreciation for the long, subtle stage race game. It's not always smash-mouth ego attacks. If you're going to be successful over a long time you'd better have depth to skills. Predictability is a liability.
Carols, Blanco because the moment Remco attacks and can't drop Roglic, he should stop. use his brains. ergo --> this stage would have become nothing fun.
Previous climb stage? same story Remo pulls to long, not using brains. should have stopped
The Vallter stage? same thing, Remco pacing way to long should not have attacked and just wait for the final km.
In all these cases, its about using brains to wait for the sprint and do as little as possible. This is the fancrush of the supporters of Roglic.
The others who fancrushing (like me) enjoy people going for the win. try things, play around. If it doesn't work it you are called stupid, if it works out its called brilliance. But at least i enjoyed/went up in the stage.
While some are saying you race to win, that is true in some form. But in fact sports is a play used to entertain people. The sponsorship are because people watch a sport because it is entertaining.
Just imagine if MSR without any climb at the end, just 300km and a sprint. People are now already skipping the first 275km