The only people who think the Spurs have lost hope in Luka are roaming this God-forsaken board, tbh. It defies all critical analysis. Why would the Spurs take an Euro (so already noticeably slower to get up-to-speed on NBA basketball as compared to college players), 19-year-old, tweener and bodily-underdeveloped, big man (also slower to come into their game than guards), who'd they been scouting for years (so his developmental curve is no question mark) -- only to "lose hope" on him in his second season? The guy literally has yet to play two consecutive NBA games, and they've lost hope?
Posters would rather hate on him than think critically. I'm not saying he won't turn out to be a bad player, we don't really know, but trying to extrapolate Luka's lack of playing time as anything more than his body and mind not being ready for NBA level basketball is stupid. Especially since he got his only fair opportunity recently (the bubble game) and, far from stinking it up or looking out of place, put up double digit points and made a couple 3's. But now, less than 4 months after that "debut", and not even having played another NBA game, the Spurs have "lost hope"....? I don't know, chief.
I'd easily bet you (well, not you, my man, I know you're a believer deep down) that we see Luka play once we start playing easier opponents. As Ex pointed out, the games we've played so far have barely even had "garbage time" for him to soak up.