No offense but that is absolute not how it came across. Maybe it would have if it was omniscient third person but Rhae got hurt and was desperately trying to stay on and was massively nervous through the whole thing (naturally) so her "kicking ass" was not how it was TO HER.
I think you're misremembering how that fight went
Rhaenyra got hurt by
Criston Cole, not Unwin or Borros
Borros only went one round, he didn't land a hit Rhaenyra at all, whole she struck him so hard he nearly died
Unwin went two rounds, failed to land a hit both times
Rhaenyra
injured him on the first pass (which made it so that he couldn't hold a shield properly anymore), and then dumped him into the dirt on the second, which left him in bad enough condition that he needed to be carted off the field on a stretcher
Cole was the one who nearly beat Rhaenyra, injuring her shoulder and very nearly knocking her off her horse
She had to squeak out a victory by landing a good enough hit to knock him from the saddle, since he was winning by points
Rhaenyra has defeated Ser Harwin Strong, who is generally considered the strongest knight in the seven Kingdoms, Kingsguard, a fair number of people at the Tourney, and a Shadowcat. There's an arguement to be made that she is the best fighter in Westeros at the moment.
Mechanics wise the only people better than her would be figures like Jamie Lannister at his peak and Barristan Selmy, and Barristan Selmy is a goddamn Anime man.
I voted for continuing to train Prowess because locking out further Improvement for the foreseeable future when we're only one tier away from Barristan Selmy level would feel bad
And 1 training action every 2 turns feels doable
Especially since Warrior Rhaenyra has the Strong trait, which was baked in from the outset
Choosing to not make Rhaenyra the greatest fighter she could be feels like betraying the character concept in that light
Yes, Rhaenyra is more than just a meathead jock, and she has other skills to develop and politicking to do
But it has been repeatedly established that being a Knight is one of the most important things in the world to Rhaenyra, and it's more than just a title or position she wants to achieve for the sake of it
It's a fundamental part of her identity
She wants to embody knighthood, the romanticism, honor and martial aspects, to the best of her ability, because it's who she is, who she always wanted to be
For Rhaenyra to just settle on her Prowess the very day she gets formally knighted feels wrong to me
It'd be fine if she really had just reached her peak and recognized it
But both her and Tarly actively acknowledge that she could still grow further
So her going "well the martial training was really just a means to an end to get formally knighted, I'm fine with where I am now" just doesn't sit right with me
Like, no, it wasn't just a means to an end, it's not just a matter of title and prestige, it's a core part of your character
It flies in the face of everything I know about you for you to say that you only bothered getting as good at combat as you did just to win one tournament, and now that it's over with you don't care to keep pushing your limits