Sumlit
San Claudio Bravo
It's not about giving up flare, it's that he currently doesn't offer much other than being a player who can pass the ball correctly. He doesn't try to get forward much, he doesn't have great vision, he doesn't dictate a game well or control all aspects of buildup play, and he doesn't offer much defensively either. He's not error prone or anything but he relies too much on caution and correctness to be great or add anything to our game, unlike Thiago who actually could dictate a game with immense ability and use his flair/attacking ability to keep our play lively. So far, he hasn't impressed me or shown anything that sets him apart and I doubt he'll even get the chance to change that, let alone see if he actually can.
I think there are some inaccuracies in your post.
For instance I saw plenty of instances when Roberto was involved in attacking plays and was adventurous going forward. Conversely, Thiago sometimes got completely lost in games where you often wondered if he even played at all. Also, Thiago is not yet great at dictating and controlling the game. That is one aspect of his game that has yet to evolve. Only in U21 did you see more of this come forward, but definitely not on the first team.
IMO Thiago's play was sometimes bipolar. He sometimes showed incredible confidence in his ability and went into extensive displays of flare that left you very excited. However you also saw him make costly mistakes caused by his overused of flare that promptly made him very self doubtful about his abilities and made him go into a shell where he became very risk adverse. Hence why you saw him disappear for large stretches of games.
Roberto's game is more controlled, more in command. He perhaps is less capable of reaching great highs during games, but he also is going to give you many less lows than Thiago.
All of this is still contingent on the fact that we have much more sample size of Thiago's game than Roberto's.
I still stand by my judgement. I feel Thiago has been a little overhyped, while Roberto has been a little underrated. Time will tell though.